5 Must-Have Features in a Scaffolding Pressed limpet Coupler

Scaffolding is essential in construction and maintenance work, providing stable work platforms and safe access to elevated areas while also serving as temporary structural support. There are many types of scaffolding, and this article provides the complete types and features of scaffolding to help you select the right scaffolding for your construction.

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Types of Scaffolding

Tube and Clamp Scaffolding

Tube and clamp scaffold, called tube and coupler scaffolding, pipe scaffolding, tubular scaffold, pipe and fitting scaffold, tube and fitting scaffold, etc., is a scaffold formed by scaffold tubes and scaffold fittings. It is the first type of metal scaffold system in the scaffolding industry, instead of the ancient timber and bamboo scaffold. Thus, tube clamp scaffold is called traditional scaffolding.

Tube and clamp scaffolds are still popular worldwide for their flexibility, stability, durability, high load, standard sizes, etc. Before modular scaffolding was born, tube clamp scaffold had a significant function in construction.

The tubular scaffold is still popularly used independently for construction or mixed with modern modular scaffolding systems. Tubular scaffolding has excellent compatibility because of the standard outer diameter of 48.3mm, the same diameter as modular scaffold parts of standards, ledgers, etc., and can be assembled at any place on the scaffold, helping modular scaffold increase the safety and convenience in bearing, shaping and reaching etc.

Scaffold tubes of the tube coupler system are generally 6m long (some are 21′ or 6.4m). They can be cut into different lengths for construction needs.

In the tubular scaffold system, scaffold tubes function as fundamental elements of verticals, horizontals, braces, and transoms during framing and forming construction support. At the same time, scaffolding clamps and fittings function as connectors and fixings between them.

Standards of Tube Clamp Scaffolding

Major Scaffold Tube Standards

• BS: British standard for scaffolding. (Recommended: Download BS standard for scaffold tubes)
• EN39: British/European Standard for Scaffolding. (Recommended: Download EN39 Standard)
• EN: European Standard for Steel Tubes ( Recommended: Download EN standard)
• ASTM: American standard for scaffold tubes ( Recommended: Download ASTM A36 and ASTM A500 )
• AS: Australian standard for scaffold tubes ( Recommended: Download AS Standard)
• JIS : Japanese standard for scaffold tubes ( Recommended: Download JIS Standard)

Recommended Read: What is the difference between BS and EN39

Major Scaffolding Clamp Standards

• EN74: British/European Standard for Scaffold Couplers (Recommended: Download EN74 standard)
• BS: British Standard for scaffold couplers (Recommended: Download BS standard for coupler)
• ASMT: American standards for scaffold
• AS: Australian standard for scaffold
•  JIS A : Japanese standard for scaffolding clamps
• KSD: Korean standard for scaffolding clamps

Popular Steel Grades of Tube Clamp systems

• S235
• S355
• S275
• STK500
• STK400
• ASTM A36
• ASTM A500

Recommended: What types of steel scaffolding grades and details

Popular Aluminium Grades of Tube Clamp systems

• T6
• T6
• T6

Types of scaffold tubes

1. Galvanized Scaffold Tubes
2. Painted Scaffold Tubes
3. Black Scaffold Tubes
4. Aluminum Scaffold Tubes

Types of scaffold fittings

1. 90-degree Coupler (Double Coupler)
2. Swivel Coupler
3. Sleeve Coupler(Joint Box)
4. Fixed Beam Girder Coupler
5. Swivel Beam Clamps
6. Putlog Coupler(Single Coupler)
7. Board Retaining Coupler(BRC)
8. Limpet Clamps(Board Clamp)
9. Inner Joint Pins
10. Ladder Clamps (Forged, Pressed Type)
11. Toe Board Clamp

Modular Scaffold(Scaffold System)

Modular system scaffolds are scaffold sets formed by prefabricated scaffold parts with typically fixed sizes, interlocking mechanisms, etc., generally not their essential parts in construction.

Modular scaffolds are mostly made of steel or aluminium metals. Essential components of the modular scaffolding are verticals, ledgers, braces, adjustable screw jack bases, transoms etc.

Different accessories on the parts (like parts of standards, ledgers and braces) of the modular system scaffold are the main features that separate different modular systems. For example:

• Ringlock system standards with rings
• Cuplock system standards with top cup and bottom cups
• Kwikstage system standards are with stars (four V clips forming the star)
• Crab system standards are with stirrups 

Features of Modular Scaffold:

• Modular Components
• Interlocking Design
• Quick Assembly and Disassembly
• Enhanced Safety
• Built-in Safety Features
• Variety of Planks and Platforms
• Durability
• Integrated Ladder Systems
• Seamlessly Interlocked Accessories

Major Types of Modular Scaffold Systems

Ringlock Scaffolding

Ringlock scaffolding is one of the modular scaffold systems, typically having rings on verticals and cast-steel ledgers head on horizontals.

Recommended Read: Ringlock Scaffolding System and What Ringlock Scaffolding is.

Types of Ringlock Systems

According to different types of ring system accessories and scaffold standards and safety regulations, There are three types of ringlock systems:

1. European Pin Type: Allround System (Conform to EN standard)
2. USA and Canada Type: Pin Lock System (Conform to CSA and ASTM standard)
3. Latin America Type: Multidirectional System  (Conform to EN standard but with unique ring system accessories of the rosette, ledger heads and brace head)

Ringlock Load Capacity and Types

According to the load capacity of the ringlock scaffolding. There are regular types and high-load types. A regular type of ring lock system is made of OD48.3mm scaffold tubes. The high-load ring lock system is made of an OD60.3mm scaffold tube.

1. OD48.3mm Regular Ringlock Scaffold
2. OD60mm Heavy Duty Ring Shore System Scaffold (Recommended Read: Hi Load Ring System System)

Features:

• The Most Popular Type of Modular System Scaffold
• High Load Capacity
• Compliance with Standards and Safety Regulations
• Fast In Erection and Dismantle
• Durable
• Versatile

Kwikstage Scaffolding

Kwikstage scaffolding is a modular scaffold system typically with Stars (formed by a set of four V clips) on the standards. It is called quickstage scaffold, quick-stage, star scaffolding, kwickstage scaffold, wedge lock scaffolding, star scaffolding, speed shore scaffold, and star shore scaffold.

(Recommended Read: Kwikstage Scaffolding System)

Types of Kwikstage Systems

1. Africa Type of Kwikstage System: Quickstage System (SANS Standard)
2. Indonesia Type of Kwikstage System: Speedshore Scaffold (AS/NZS Standard)
3. Australian & UK Type of Kwikstage System: Kwikstage System

Features:

1. Popular Used In the UK, Australia, Ireland, South Africa, Mozambique, Nigeria, Mauritius, Indonesia etc.
2. Compliance with Safety Regulations
3. Cost Effective
4. Modular Components
5. Versatile for Construction

Cuplock Scaffolding

Cuplock scaffolding is a modular scaffold system with typical accessories of top and bottom cups on cuplock verticals and ledger blades on cuplock ledgers. In erection, the vertical top cups lock the ledger blades to the bottom cups, forming sturdy frames and sets to support structure and construction.

Recommended: Cuplock System Parts

Type of Cuplock System

• Painted Cuplock System:  Required by Gulf countries and African countries.
• Hot Dip Galvanized Cuplock System: Required by UK, Ireland, USA, etc.

Features:

1. An old modular system scaffold that was invented by SGB and has been serviced in the scaffolding industry for a long time.
2. Wide Used Scaffolding System
3. Compliance with Scaffold standards and safety regulations
4. Versatile System For Both Construction and Formwork. (Recommended: Cuplock Formwork)

Recommended: Catalogue Download of Cuplock

Quick Lock Scaffolding

Quick lock scaffolding is a steel modular scaffold system with disc plates on verticals(legs) and cast iron ledger ends on horizontal parts. The discs on the verticals have four holes to receive quick lock horizontals from 4 directions.

The quick lock scaffold system has fewer components and mainly supports formwork beams and decks in concrete shoring. The legs and horizontal parts of the quick lock system are made of OD48.3mm steel scaffold tubes.

Featured:

1. Mainly for Formwork Shoring.
2. Used in Some the African countries
3. Cost Effective
4. OD 48.3mm for Both Legs and Horizontals

Tubelock (Twist Lock) Scaffolding

A Tubelock scaffold is a tube with a female fitting at one end and a male fitting at the other. In construction, the male and female ends lock together by twisting them. There is no need to invest in sleeve couplers and inner joint pins in the scaffold tube connection.  A tube lock scaffold is called a twist-lock scaffold or a steel tube with a fitting. They are self-locked, thus saving 50% of the erection and dismantling time in scaffolding construction compared to the traditional tubular scaffold. Tubelock scaffolding is made of 48.3mm diameter and 3.2mm thickness.

Features:

1. Durable
2. Easy Fixing with End Fittings
3. Used a lot in the USA and Canadian countries
4. OD48.3mm standard diameterer
5. All lengths available

Crab 60 Shoring Scaffolding

Crab 60 shoring scaffold is a modular steel scaffold made of OD60mm scaffold tube in S355 steel grade with sets of stirrups on vertical parts and forged wedge keys and C clamps on horizontal parts.

(Recommended Read: Steel grades for scaffolding)

In the system, there is a special component called a triangle frame. This part helps the Crab 60 system scaffold quickly move from place to place without the need to scaffold dismantle in heavy-duty shoring. Thus, it saves a lot of labour costs and makes the concrete and shoring highly efficient.

Features:

1. Hight Load System for Heavy Duty Support and Shoring
2. Durable System Scaffold
3. Efficient Scaffold System Save Construction Time (No need to dismantle in place to place moving)
4. Popular Used in Malaysia Singapore, France, etc.

Crab 25 Scaffolding

Similar system scaffolds likethe  Crab 60 system with accessories of stirrups on verticals and forged clamps and keys on horizontals. But made of OD48.3mm scaffold tubes.  It is also called a multi-function scaffold system.

Features:

1. Scaffold System Galvanized Popular Used In France, Malaysia, Brazil etc
2. Lightweight Compared to Crab 60 Shore System
3. Automatic Locking Mechanism
4. Cheaper Cost Than Crab 60 Scaffold

Quick Erect Scaffolding (QES)

Quick erect scaffolding is a steel modular scaffold similar to ringlock scaffold but with forged round rings and forged wedges. In contrast, the wedges are integrated inside the scaffold tube, which does not need extra cast ledger heads welded on. It is called a QES scaffold.

Octagonlock Scaffolding

Octagonlock scaffolding is a steel modular scaffold with forged or casted octagon rings(not round rings) on verticals while cast ledger head on horizontals with forged wedge key locked to the octagon rings in construction, forming strong scaffold structures and frames.

Frame Scaffolding

Frame scaffolding is a metal scaffold modular system with components of prefabricated “frame“-shaped verticals, which have double legs and scaffold lock pins welded on. In the frame system scaffold construction, the vertical frames are always used in pairs, connected, and fixed by scaffold single or x braces and horizontals to form support or a working area. Frame scaffolding is also called bracing scaffolding or lock pin scaffolding.

Frame scaffolding is easy to use with prefabricated paralleled vertical tubes. It needs less erection time and works then the popular modular scaffold systems like ringlock, kwikstage and cuplock systems.

According to the shape of vertical frames, there are many types of frame scaffolding systems: walk-through frame, ladder frame, h frame, narrow frame, European facade frame scaffold, and shoring frame.

Walk through Frame Scaffold  

A walk-through frame scaffold is a frame system scaffold with vertical “frames” featuring an opening or walk-through portal that allows easy passage for workers and persons within the scaffold structure. Thus, walk-through frame scaffolding is often used in sidewalk or shed scaffolding in cities.

The walk-through frame scaffold is in an ‘A’ shape. It is also called a walkthru frame, main frame scaffolding, or A-frame scaffold. Walk-through frames have widths of 3′, 4′, 5′, and 42“, which enables workers to carry materials and perform tasks without obstruction along entire lengths of the structure.

Ladder Frame Scaffold

Ladder frames are 4′ or 5′ wide with two or three ladder rungs on half of the width. The width of the ladder rungs is enough to put one width of the scaffold platform on.  The adjustable working platform height is convenient for material shelving and different working height requests for brick masonry, stucco, carpentry work etc.,

Thus, ladder frame scaffolding is also called masonry scaffolding or mason frame scaffold.

H Frame Scaffold

H frame scaffolding is any scaffolding vertical frames with two vertical tubes that are connected by one or two horizontal tubes forming a shape of “H”. Thus, H frames can be used for walk-through frames, ladder frames, shoring frames, euro frames, and narrow frames. Two pieces of H frames fixed by cross X braces form scaffold structures in building construction.

Narrow Frame Scaffolding

Narrow frame scaffolding is the scaffold frames with a “narrow” width, less than 3′, from one vertical to another vertical. There are 4-5 rungs between the narrow frame’s two vertical tubes.  Narrow frame scaffolding is designed to be easily moved and often formed with caster wheels as a mobile scaffold, used in painting, drywall, and plasters the jobs that workers must frequently change position.

Shoring Frame Scaffolding

A shoring frame is a scaffolding frame designed to withstand high loads in construction for heavy-duty concrete and shoring. Shoring frames are made of OD57mm or OD60mm scaffold tubes in S355 higher steel grade.

Euro Frame Scaffolding

Euro frame scaffolding is a type of frame scaffold required for facade construction in European countries. It is made of OD48.3mm vertical tubes that can take heavier weight than regular scaffold frames of OD42mm. Euro frame scaffolding includes Layher Speedyscaf frame scaffold, Plettac frames, Marco Euro(Chile), etc.

Scaffold Props

Scaffolding props are temporary supports used in construction to prop up slabs, beams, walls, and columns until the concrete has cured to a strength that can support itself. These props play a crucial role in formwork systems or shuttering work, carrying the weight of concrete and reinforcing architectural components until the structure can bear the load.

Designed for height adjustment, scaffolding props consist of inner and outer tubes, threaded prop sleeves, prop nuts, top and bottom plates, and lock pins, allowing them to adapt to the required height. They can support various construction applications.

Scaffolding props, also known as formwork props, shuttering props, shuttering jacks, structural props, acrow props, acro jacks, adjustable steel props, jack posts, shore props, shoring jacks, shoring props, telescopic props, shore posts, cover-a-height range from 0.6 meters to 6 meters. They are typically made from steel or aluminium.

Based on their designed load capacity, scaffolding props are divided into various load classes: heavy-duty, medium-duty, and light-duty.

Heavy-duty props are classified into D class and E class. The D class props come in sizes D25, D30, D35, D40, D45, D50, and D55 and have a designed load capacity of 34 kN (according to the EN standard). The E-class props include sizes E25, E30, E35, E40, E45, E50, and E55 and have a designed load capacity of 51 kN (according to the EN standard). Heavy-duty scaffold props typically feature an outer diameter of 76 mm for the outer tube and 60 mm for the inner tube, both made of steel.

Medium-duty scaffold props are classified as B and C classes, covering sizes from C25 to C55. Light-duty scaffold props fall under A class, covering sizes from A25 to A40.

Mobile Scaffold (Rolling Scaffold Towers)

Mobile scaffolds are supported scaffolds equipped with wheels or casters, making them movable for light work such as painting, plastering, drywall installation, and minor repairs. They are suitable for indoor and outdoor use, especially in jobs requiring frequent repositioning. Mobile scaffolds provide convenient access to elevated areas and can be easily moved around construction sites without dismantling the entire frame. These scaffolds are also known as rolling scaffolds and include various types such as single or narrow-frame mobile scaffolds (like baker scaffolds or perry scaffolds), double-width mobile scaffolds, folding scaffolds, and adjustable mobile scaffolds.

Folding Scaffolding(Portable Scafold)

Folding scaffolding is designed for easy folding and unfolding, making it convenient for transportation and storage. It features hinges or folding mechanisms that allow the scaffold to collapse into a compact size. Typically, folding scaffolding includes casters and a single platform, enabling it to be easily moved to different positions for elevated jobs inside and outside the home. It is often called a portable scaffold constructed from aluminium or steel. This type of scaffolding is commonly used for home improvement and DIY projects.

Metal Scaffolding, Fiberglass Scaffolding and Wood Types of Scaffolding

According to the difference in the material of scaffolding, there are metal, fibreglass, and wood scaffoldings.

Metal Scaffolding

Metal scaffolding is the most common type of scaffolding. It consists of various components, including verticals, horizontals, braces, base jacks or frames, and cross braces, all made from steel or aluminum. This type of scaffolding enables workers to safely and conveniently access elevated and hard-to-reach locations while providing strong support for formwork concrete during various construction projects. Metal scaffolding includes both steel scaffolding and aluminium scaffolding.

Steel Scaffolding

Steel scaffolding is constructed from steel and consists of verticals, horizontals, braces, base jacks, and metal decks and frames. It is designed to provide access and platforms for workers working at heights and shoring support for structures and concrete. Due to its high strength, safety, durability, and cost-effectiveness, steel scaffolding is the best scaffolding today, and it can be used for a wide range of construction and shoring applications.

There are two main types of steel scaffolding: modular scaffolding systems, which use prefabricated modular parts, and traditional tubular scaffolding, made from steel scaffold tubes and clamps. Both types are commonly used in construction and shoring projects.

Steel scaffolding needs to have a surface treatment and be finished by galvanizing, painting, or coating. From this perspective, the scaffolding type can be galvanized, painted, or coated.

• Galvanized scaffolding: Hot dip galvanized or E-galvanized protected scaffolding material
• Painted scaffolding: scaffolding material painted for anti-corrosion purposes
• Powder-coated scaffolding: scaffold material coated by colour powder
• Black scaffold: scaffolding self-finished without any protection

Aluminium Scaffolding

Aluminium scaffolding is a lightweight scaffold system commonly used as scaffold towers or mobile scaffolding with components made of aluminium or alloy metals. It offers workers safe and convenient access and work platforms on various construction and maintenance projects. Aluminium scaffolds are corrosion-resistant and durable. They are easy to move and can be assembled with minimal effort, which increases efficiency and reduces labour costs on the job site. This type of scaffolding is suitable for small- or light-to-medium-duty construction, as it has a lower weight-bearing capacity than steel scaffolding.

Fiberglass Scaffolding (GRP Scaffold)

Fibreglass scaffolding is made from glass-reinforced plastic (GRP), which is nonconductive, fireproof, and chemically resistant. This type of scaffolding is known for being lightweight, strong, and flexible. It is suitable for use in power substations and petrochemical environments where metal and wood scaffolding is prohibited.

Wood Scaffolding

Wood scaffolding is an ancient form of scaffolding that was commonly used before the introduction of steel scaffolding. It is constructed from timber, wood, or logs. While wood scaffolding was widely popular in the past, it has become less common today. However, some scaffolding components, such as wooden planks and pole ladders, are still in use. The best wood for wood scaffolding is Douglas fir, larch, hemlock, spruce, pine, or coast-Sitka spruce species. The cheapest wood is New Zealand Pine.

Conclusion

Different types of scaffolding have different features. You can choose the right type according to your project requirements, including height, load capacity, and work conditions. Selecting the right scaffolding system enhances safety, efficiency, and project success.

Scaffolding Coupler Ultimate Guide

1. What is Scaffolding Coupler

Scaffolding couplers are scaffold connectors and fittings used to fix scaffold tubes and pipes in position. Scaffolding couplers are also called scaffolding clamps, scaffold fittings, scaffolding pipe fittings, scaffold tube clamps, scaffold connectors, scaffold joints, scaffold knuckles, etc.

Scaffolding couplers are always used to connect round scaffolding pipes. The scaffolding pipe diameter decides the scaffolding coupler sizes. That is why you can find scaffolding couplers in sizes of OD48.3mm, OD42.7mm, OD60.3mm, OD76m, O89mm, etc.

Among them, the OD48.3mm scaffolding coupler is the most common size of construction scaffolding fittings.  Because standard tube clamp system scaffold tubes are 48.3mm outer diameter.

OD42.7mm scaffolding clamps are used to connect between two frame scaffolding verticals. Because traditional scaffolding frames are made of OD42mm scaffold tubes.

OD60mm and OD76mm scaffolding couplers are used in shoring frame systems, propping scaffolding, etc. These scaffolding components are made of OD60mm and OD76 scaffold pipes.

OD89mm scaffold clamps are required for the USA companies’ scaffolding construction.  They are used to connect the bridge posts in sidewalk scaffolding construction.

According to the scaffolding coupler function in construction, you can find different types of scaffold couplers:

• Scaffold Double Coupler (Right Angle Clamps)
• Scaffold Swivel Coupler (Rotation Clamps)
• Scaffold Single Coupler (Putlog)
• Scaffold Sleeve Coupler (Joint Box)
• Scaffold Joint Pins (Inner Joints)
• Fixed Girder & Swivel Beam Clamp (Gravlock)
• Forged & Pressed Scaffold Ladder Clamp
• Scaffold Board Retaining Coupler (BRC)
• Limpet Camps (Pank Clamps)
• Toe Board Clips
• Fence Coupler
• Half Clamp

Among all scaffolding couplers, the common 5 scaffold clamps are double couplers, swivel couplers, sleeve couplers, BRC couplers, and beam clamps. They are required in all types of tube clamp scaffolding construction.

2. Scaffolding Coupler Features

1. 1. Can take heavy duty load in construction with up to 4.0mm thick scaffolding poles
   2. Freely scaffold intervals according to the project conditions
   3. Scaffolding couplers are durable reusing for a long time
   4. Versatile to erect any shape of scaffold for any industry and construction
   5. Anti-corrosion with galvanizing surface
   6. Cheaper and Save Cost
   7. Easy transportation and stock
   8. Compatible with all scaffoldings

3. Coupler Scaffolding VS System Scaffold

Scaffolding is a type of construction material used to form scaffold frames and scaffold towers for temporary and permanent support in the application of concrete formwork and shoring, building construction&staging, maintenance & repair, indoor and outdoor temporary structure, etc.

Basically, there are two main types of scaffolding used for temporary and permanent support. One is coupler scaffolding. Another one is modular scaffold systems.

Additional reading:
Top 7 aluminum casting methods: which process you should choose

Contact us to discuss your requirements of Scaffolding Pressed limpet Coupler. Our experienced sales team can help you identify the options that best suit your needs.

Coupler scaffolding is a construction scaffolding jointed by scaffolding couplers and scaffolding pipes. Thus it is also called tube and coupler scaffold.

In the coupler scaffolding, the scaffolding pipes are connected and fixed by scaffolding couplers at a right angle or any angles.

with the help of the scaffolding couplers and fittings, scaffold pipes and tubes can be erected in the function of vertical standards, horizontal ledgers, diagonal braces, horizontal braces, scaffold transoms, etc.

Special scaffold parts are able to be fixed onto the scaffold mainframes too by the scaffold fittings. For example, you can use the board retaining couplers to fix scaffold boards on scaffolds horizontally to avoid the walking board moving. Scaffold fence couplers joint two scaffold fences together.

Coupler scaffolding forms the scaffold frames and temporary shoring conveniently and easily. You just need to cut the scaffolding pipes and tubes into the required lengths. Then use the scaffold couplers and clamps to form any shapes of scaffolding.

In coupler scaffolding construction, scaffold intervals are customized according to your building shapes and ground conditions.

That is why coupler scaffolding is also called convenient scaffolding. Though it is the traditional scaffolding(born decades earlier than modular scaffold), it is still popularly required globally wide. Column scaffolding, circle scaffolding, staging scaffolding, side scaffolding, suspended scaffolding, inside and outside scaffolding, protection scaffolding, formwork scaffolding, and shipbuilding scaffold are always formed by the coupler scaffolding.

Coupler scaffold arrangement should meet up construction safety rules and guide anyhow.

Scaffold systems are a type of modular scaffolding.  Components and parts of the scaffold systems are prefabricated. Each system scaffold component and part are with welded/bolted locks, pins, clips, fasteners, and accessories. Thus modular scaffolding system no needs extra scaffolding couplers or fittings. There are 6 different types of scaffolding systems:

1. 1. Ringlock Scaffolding System
   2. Kwikstage Scaffolding System
   3. Cuplock Scaffolding System
   4. Scaffolding Frames
   5. Crab Scaffolding System
   6. Quick Lock Scaffolding System

4. Scaffold Couplers Weight and Bearing Load

4.1 Double Coupler Load Capacity and Weight

The double coupler can hold weights more than 30 KN (meet up EN74 Class B standard). It is a scaffolding coupler used to fix scaffold tubes at the right angle(90 degrees). That is why scaffolding double coupler is also called right angle(90 degrees) scaffold coupler or fixed clamps.
Scaffolding double couplers are used to joint scaffold standards, and scaffold ledgers in the tube coupler scaffolding construction.
The most used scaffold double coupler is OD48.3mm. Other sizes of OD48.6mm, O42mm, OD60mm, OD76, and OD89mm double couplers are available too.
The different sizes of scaffold double couplers are used to connect different diameters of the scaffolding poles(or scaffold pipes). All scaffold double couplers are finished in hot dip galvanized or zinc plated.
In addition, bolt and nuts can be hot dip galvanized too if needed to make the scaffold double couplers more durable.

Weight of Different Types of Double Coupler

No.Double CouplerTypesSize(mm)WeightFinishing1BS Forged Double CouplerBritish Type48.3×48.31.05 KGGalvanized2BS Pressed Double CouplerBritish Type48.3×48.30.85 KGGalvanized3Double Coupler 48x60mmBritish Type48.3×601.35 KGGalvanized4Double Coupler 40x60mmBritish Type40×601.45 KGGalvanized5Double Coupler 48x42mmBritish Type48.3×421.25 KGGalvanized6EN 74 Germany Double CouplerGermany Type48.3×48.31.32KGGalvanized7USA Double Coupler 48×48American Type48.3×48.31.55 KGGalvanized8USA Double Coupler 48x89mmAmerican Type48.3×892.35 KGGalvanized9AS Double CouplerAustralia Type48.3×48.31.25KGGalvanized10Italian Type Double CouplerItalian Type48.3×48.31.35 KGGalvanized12JIS A  Fixed ClampsJapanese Type48.6×48.60.65 KGGalvanized13KSD  Fixed ClampsKorean Type48.6×48.60.65 KGGalvanized

4.2 Swivel Coupler Bearing(Load Capacity) and Weight

Swivel couplers can hold weights of more than 20 KN (EN 74 ClassB) and 14 KN (EN74 Class A). It is a type of loading-bearing scaffold coupler used to fix two scaffold tubes at any angle in the scaffolding construction.

In construction, the swivel couples and clamps are always used to attach scaffold diagonal braces onto the tube clamp scaffold.

Swivel coupler sizes are based on your scaffold tube diameter. The OD48.3mm are the most common sizes for the scaffold swivel coupler. It is used to joint the standard scaffolding pipes and scaffold poles with a diameter of 48mm.
Other sizes for the scaffold swivel coupler are available too. Including 42mm, 60mm, 76mm, 89mm, etc.
These non-standard sizes of scaffold swivel couplers are used to connect traditional scaffold frame systems with OD42mm vertical poles, heavy-duty shoring frames with OD60mm verticals, and sidewalk sheld construction bridge legs(bridge post).
OD76mm and OD60mm scaffolding swivel couplers are also called prop couplers. It is used to connect scaffold props with OD60mm and OD76mm outer tubes.

Weight of Different Types of Swivel Coupler

No.Swivel CouplerTypeSize (mm)WeightFinishing1BS Forged Swivel CouplerBritish Type48.3×48.31.20 KGGalvanized2BS Pressed Swivel CouplerBritish Type48.3×48.31.00 KGGalvanized3Swivel Coupler 48x60mmBritish Type48.3 x 601.45 KGGalvanized4Swivel Coupler 60x60mmBritish Type60 x 60 1.72 KGGalvanized5Swivel Coupler 76x48mmBritish Type48.3 x 761.75 KGGalvanized6Swivel Coupler 89x48mmBritish Type48.3 x 892.75 KGGalvanized7Half Swivel Coupler 89mmBritish Type89mm2.15 KGGalvanized8Swivel Coupler 42x42mmBritish Type42×421.35 KGGalvanized9Swivel Coupler 42x48mmBritish Type48.3 x 421.45 KGGalvanized10EN 74 Germany Swivel CouplerGermany Type48.3×48.31.45 KGGalvanized11America (USA) Swivel ClampAmerican Type48.3×48.31.75 KGGalvanized12Italian Type Swivel CouplerItalian Type48.3×48.31.55 KGGalvanized13AS Swivel CouplerAustralian Type48.3×48.31.35 KGGalvanized14JIS A  Swivel ClampsJapanese Type48.6×48.60.65 KGGalvanized15KSD Swivel ClampsKorean Type48.6×48.60.65 KGGalvanized

4.3 Scaffold Sleeve Coupler Load Capacity and Weight

The sleeve coupler is allowed to hold a weight of 9.0 KN(slip force) in scaffolding construction according to EN74 Class B.
The scaffold sleeve coupler is a type of scaffolding coupling used to joint two scaffold tubes end to end from outside of the scaffolding tubes. That is why it is also called a scaffold joint box.
The scaffold sleeve coupler size is always 48mm. That means scaffold sleeve couplers are used for OD48mm scaffolding pipes only. If you want special sizes, need to open new molds.
Scaffold sleeve couplers are a type of pressed steel scaffolding coupler, not drop forged. It is manufactured and formed from steel plates. According to the steel plates’ raw material thickness, there are 3.5mm and 4.0mm scaffold sleeves for your choosing.
3.5mm scaffold sleeves are the normal duty scaffolding couplers. It is the most used scaffold clamp in British and European standard construction.
4.0mm scaffold sleeves are a type of heavy-duty scaffolding coupler. It can take more weight and is used in high load requirement construction.
Both scaffold sleeve couplers conform to BS/ EN 74 scaffold standards.

Weight of Sleeve Coupler

No.ItemsTypeSize&Spec
mmWeightFinishing1Sleeve Coupler – NBS&EN×3.5mm1.15 KGGalvanized2Sleeve Coupler-HBS&ENx 4.0mm1.00 kGGalvanized

4.4 Putlog Coupler Load Capacity and Weight

The shape of the putlog coupler is like a pig ear. There are single putlog couplers and double putlog couplers in scaffolding.
The commonly used putlog coupler is a single putlog. That is why the putlog coupler is called scaffold single coupler too. A double putlog coupler is also called a scaffold wrap over coupler.
The allowed slip load of the putlog coupler is 1.07-2.11KN (BS).
In construction, the putlog coupler joints scaffold putlogs or transoms onto scaffold ledgers at 90 degrees (right angle).
It is used to attach scaffold boards onto the scaffold transom too. Putlog coupler is one of the most used scaffold clamps that gives safety support for scaffold staging and work platform in the scaffolding structure.
Scaffold putlog couplers standard is BS standard. Wellmade manufactures and tests the scaffold putlog coupler according to BS too.
According to the types of scaffold putlog covers, there are two types of scaffold putlog couplers:

• Pressed putlog coupler
• Forged putlog coupler

Putlog Coupler Scaffold Weight

No.ItemsTypeSizeWeightFinishing1Drop Forged Putlog CouplerBSmm0.65 KGGalvanized2Pressed Putlog CouplerBSmm0.63 KGGalvanized

4.5 Beam Clamp (Girder Coupler) Load & Weight

The British scaffold beam couplers are called girder couplers, gravlock couplers or gravlock girder clamp, SK scaffold fittings, etc.
Japanese&Korean beam clamps are called scaffolding C clamps too. British standard scaffold beam couplers are manufactured and tested according to AS standard. The allowed bearing load is 30 KN according to the standards.
Japanese standard scaffold C clamp beam coupler is tested according to JIS A standard.
Both standard scaffold beam clamps are used to connect between scaffold beam and scaffold main structure.
Scaffold beam clamps include fixed beam clamps, swivel beam clamps, and extended beam clamps.
A normal British standard scaffold beam clamp can fix a max of 51mm flange thick of scaffold beams to the scaffolding.
If you want to use a scaffold beam with a flange thickness of more than 51mm, you need to choose the extended beam couplers. The extended gravlocks can fix 81mm flange thickness scaffold beams.
Japanese and Korean types of scaffold beam clamps can attach a max 36mm flange thickness scaffold beam to the scaffolding structure.
Scaffold fix gravlock couplers are used to fix scaffold beams to the scaffolding structure at 90 degrees. While swivel beam clamps fix scaffolding beams to the scaffolds at any angles.

Scaffold Beam Coupler Weight

No.ItemsTypeSizeWeightFinishing1AS  Fixed Beam ClampsBritish Type48.3mm1.50 KGGalvanized2AS  Swivel Beam ClampsBritish Type48.3mm1.60 KGGalvanized3Extend Beam ClampBritish Type48.3mm1.78 KGGalvanized4USA Fixed Beam ClampAmerican Type48.3mm1.55 KGGalvanized5JIS A  Fixed Beam Clamp (C Clamp)Japanese Type48.6mm1.00 KGGalvanized6KSD  Fixed Beam Clamp (C Clamp)Korean Type48.6mm1.00 KGGalvanized7JIS A  Swivel Beam Clamp(C Clamp)Japanese Type48.6mm1.00 KGGalvanized8KSD 35o1  Swivel Beam Clamp(C Clamp)Korean Type48.6mm1.00 KGGalvanized

4.6 Scaffold Plank Clamps and Weight

The scaffold plank clamp is one type of scaffolding coupler used to fix scaffold boards to the scaffold structure.
The scaffold plank clamp sizes are manufactured according to the height(thickness) of your scaffolding boards
There are 2 types of scaffold plank clamps for tube coupler scaffolds:

1. Board Retaining Coupler(BRC)
2. Limpet Clamp

Board retaining coupler is also called the BRC coupler. It is a British standard scaffolding board clamp.
The BRC coupler with one side connects on OD48.3mm scaffold tubes. Another side connects to scaffold boards. Before the BRC coupler manufacturing, you need to confirm the height of the scaffold boards. Because the height of the BRC coupler needs to be adjusted to meet up your scaffold board’s thickness.
The popular scaffold board thickness(height) is 38-50mm in tube and coupler scaffolding. Thus the BRC coupler height will be matched up with the 38-50mm scaffold boards.

The Limpet clamp is a type of lightweight scaffolding plank clamp. The weight is only 0.36KG. The limpet clamp size is standard. It can fix a max 58mm thickness scaffold planks.
Both plank clamps are manufactured and tested according to the BS scaffold standard.

The scaffold plank clamps application guide can be found in the following two photos.

Scaffold Plank Type and Weight

No.ItemsTypesPlank HeightWeightSize1Forged Board Retaining CouplerForged38-50mm0.60 KGOD48mm2Pressed Board Retaining CouplerPressed38-50mm0.60 KGOD48mm3Limpet ClampLight Weight38-58mm0.35 KGOD48mm

4.7 Scaffolding Inner Joint Pin Coupler and Weight

Opposition to scaffold sleeve coupler, scaffolding inner joint pins joint scaffolding from the inner diameter of the scaffold tubes. So we call it inside scaffold joiners.

You can find the following four different types of scaffolding joint coupler

1. Forged Inner Joint Pins BS
2. Pressed Inner Joint Pins BS
3. JIS & KSD Bone Joints (For 48.6mm GI Scaffolding Pipes)
4. Joint Pin with Rivet (For Rivet Pipe Scaffolding Only)

Scaffolding Joint Clamp Types and Weight

No.ItemsTypesSizesWeightFinished1Forged Scaffold Inner Joint PinBS British Type48.3mm1.10 KGGalvanized2Pressed Scaffold Joint ClampBS British Type48.3mm0.68 KGGalvanized3Scaffold Bone JointJIS A  Japan Type48.6mm0.65 KGGalvanized4Joint Pin with RivetKSD  Korea Type48.6mm0.50 KGGalvanized

4.8 Scaffold Ladder Clamp  BS and Weight

Scaffold ladder clamps are scaffolding couplers used to attach scaffolding ladders to the tubular scaffold structure.
There are drop forged types and pressed steel types of scaffolding ladder clamps. All types of scaffold ladder clamps can fix scaffolding ladders easily and safely in the tube clamp scaffold construction.
In the construction, you can use the scaffolding ladder couplers to fix steel scaffold ladders or aluminum ladders.
Wellmade scaffold ladder couplers are manufactured and tested according to BS standards.

Forged and Pressed Ladder Clamp Size and Weight

CodeItemsSizeWeightWFLForged Ladder Clamp ScaffoldOD48.3mm0.68 KGWPLPressed Ladder Clamp ScaffoldOD48.3mm0.50 KG

4.9 BS Scaffolding Toe Board Coupler and Weight

The scaffold toe board coupler is a type of scaffolding coupler and clamps used to fix timber or steel toe boards to the scaffolding structures.
There are different types of scaffold toe board couplers. L plate type, as well as double side toe board couplers.
In construction, one side of the scaffold toe board coupler connects with scaffold tubes 48.3mm (horizontal or vertical). Another side of the board coupler connects to the timber or steel scaffold toe boards.
Using the scaffold toe board clamp makes the scaffolding construction much safer to avoid articles dropping down from the work platform.
It is a type of important scaffold fittings in side protection scaffolding too. In the side protection scaffolding, the scaffold toe board couplers work with a safety net to ensure the safety of scaffolders and workers.
Wellmade manufactures scaffold toe board clamps according to BS standards.

Code No.ItemsTypesSizeWeightFinishingWTBCPressed Toe Board ClampBS British Type48.30.50 KGGalvanizedWDBCDouble Sise Toe Board CoulerBS British Type48.31.0 KGGalvanized

4.10 BS Scaffolding Fence Couplers and Weight

Scaffold fence couplers are scaffolding fittings used to joint two fence barriers together.
Fence coupler fittings are double clamp scaffolding. In construction, they connect two verticals/poles of the scaffold fences side by side.
Wellmade manufactures the fence scaffold clips from high-strength steel plates. The fence coupler sizes are designed according to the outer diameter of the scaffold fence verticals.
The most popular fence coupler size is OD42mm. While other sizes are available by opening new molds.
Wellmade manufactures scaffold fence couplers according to BS standards. You can find E-galvanized (zinc-plated) or hot dip galvanized fence coupler scaffold for your construction.

Fence Coupler Scaffold Size and Weight

Code No.ItemTypeSize mmWeightFinishingWFCFence Coupler ScaffoldingPressed CouplerOD 420.5 KGGalvanized

4.11 Universal Clamp Scaffold and Weight

Universal clamps are scaffolding couplers with long bolts and two V clips. That is why we call them to scaffold V clamps too.  The long bolts of universal clamps are in the size of M12x125mm(L).
Universal clamps are multipurpose used scaffold clamps in the tube&coupler scaffold systems. In manufacturing, the scaffold universal clamps are pressed from high-strength steel plates.
Wellmade supplies you both zinc plated and hot-dip galvanized universal couples for your construction.

Scaffold Universal Clamp Weight

Code No.ItemsTypeWeightFinishingWUCScaffolding Universal ClampBS.50 KGGalvanized

5. Heavy Duty Medium Duty & Light Duty Coupler Scaffolding

Scaffolding couplers with high anti-slip and distortion strengths, so they can be applicated in light duty, medium duty, and heavy-duty scaffolding.
Light duty tubular scaffolding use 1.8-2.4mm scaffolding pipes and lightweight pressed steel scaffolding clamps like JIS(Japanese standard) fixed clamps, JIS swivel clamps, JIS Beam clamps, etc.
Medium duty tube coupler scaffolding is formed by 3.0-3.2mm scaffold tubes and pressed steel British scaffolding clamps like BS/EN74 pressed right angle clamps, pressed swivel clamps, etc.
Heavy-duty tubular scaffolding is formed by 4.0mm scaffold tubes and drop forged double couplers, forged swivel couplers, forged beam clamps, putlog, etc.

6. Eight Basic Parts of Coupler Scaffolding

• Vertical Scaffolding Standards
• Horizontal Scaffold Ledgers
• Diagonal Scaffold Braces
• Intermediate Scaffold Transoms
• Adjustable Jack Bases
• Scaffold Ladders
• Scaffold Boards
• Scaffold Beams

7. Scaffold Planks for Coupler Scaffolding

You can use timber scaffold planks or steel scaffold boards in coupler scaffolding.
Timber scaffold board scaffolding is connected by board retaining couplers.
Steel scaffold boards can be with hooks or without hooks. Hook-on scaffold boards can sit directly on the coupler scaffold ledgers and transoms. While steel planks without hooks need to position by scaffold board clamps too.
scaffold plank sizes for coupler scaffolding include 225mm, 230mm, 240mm, 210mm, 250mm, 300mm, 320mm, 400mm, 420mm, 450mm, 19″, 500mm, 600mm, 610mm, 620mm.

8. Scaffolding Coupler Test Videos

Following are the videos showing how Wellmade tests our scaffolding couplers in our daily production and quality control.
According to scaffolding standards of EN 74, ANIS, AS, JIS , and KSD , all scaffolding couplers need to meet up slip test and distortion test requirements to ensure the load capacity and strengths in construction scaffolding.
Wellmade has complete scaffolding test facilities in its own test house. We proceed with daily tests in our test house to ensure all scaffolding couplers from Wellmade are qualified and exceed the scaffolding standard requirement.
So every scaffold couplers and clamps from Wellmade are qualified and safe using in construction.

• 1. Drop forged double coupler test video

• 2. Sleeve Coupler Test Video

9. How to Assembly  Scaffold Coupler and Scaffold Tubes

Following is the video show how scaffold couplers joint together with scaffold tubes in construction.

10. Scaffolding Couplers Buying Guide

10.1 How to Choose Forged, Pressed, and Cast Couplers for Your Construction

According to the scaffolding manufacturer procedures, there are 3 types of scaffolding couplers: Drop Forged Scaffolding couplers, Pressed Steel Scaffold Clamps, and Cast Iron Scaffolding Couplers

Drop Forged Scaffolding Couplers

Drop forged scaffolding couplers are forged from high-strength steel round bars. The manufacturing process:

1. Heating the Round Bar to a High Temperature to Make the Steel Bar Easy to Form
2. Forming The Steel Round bars to Shape Scaffold Coupler Covers and Bases by Molds
3. Cutting, Drilling the Scaffold Coupler Covers and Bases
4. Assembly Scaffold Bolts and Nuts
5. Roundness Test and Safety Load and Slip Test

Pressed Steel Scaffolding Couplers

Pressed Steel Scaffolding Couplers are manufactured from high-strength steel plates.

Pressed scaffold coupler manufacture processes include:

1. Punching & Forming the High-strength Steel Plate into a Shape of Scaffold Clamp Covers and Bases
2. Drilling Holes and Cutting
3. Assembling Scaffolding Couplers with Bolts and Nuts
4. Roundness and Load Capacity Test

Cast Iron Scaffolding Couplers

Cast iron scaffolding couplers are traditional Chinese standard scaffold couplers. The manufacturing process:

1. Pouring Melted Liquid Iron Into Scaffold  Coupler Molds
2. Shaped Cast Iron Scaffold Clamps
3. Cutting and Drilling Holes
4. Assembly Bolt and Nuts

How to choose the type of drop forged, pressed steel, and cast scaffolding couplers

With forged coupler covers or forged coupler bases, 8.8 class bolt, and nuts, the forged scaffolding couplers are the strongest scaffold coupler. They are always used in heavy-duty tubular scaffolding systems. If you are going to use BS and EN 39 standard scaffold tubes in OD48.3×4.0mm size for your construction. You need to use drop forged scaffolding couplers.
From the manufacturing process and raw material differences, you can find the forged scaffolding the most stable and more durable scaffold couplers that can work under all conditions and atmospheres.
Thus forged scaffolding couplers are the best scaffolding coupler among all the three types of scaffold clamps.  That is why it is also the most common scaffold clamps in global wide that most big scaffolding companies, construction companies, contractors, and formwork companies prefer drop forged scaffold couplers.

For drop forged scaffolding couplers, you can find various types, include forged double coupler(fixed clamps), forged swivel clamps, forged fixed and swivel girder couplers, and forged putlog(single) couplers, forged board retaining clamps, etc.

For pressed steel scaffolding couplers, there are British type and Japanese/Korean type pressed steel scaffold couplers.

British (BS/EN74 standard) pressed scaffold couplers are used a lot for 3.2mm (Type 3) wall thickness British standard pipe scaffolding. It is a type of medium-duty tube scaffolding system compared to a 4.0mm tube coupler scaffold.
Japanese and Korean standard (JIS & KSD) scaffolding couplers and clamps are mostly pressed steel types. They are lighter in weight than the British standard pressed steel scaffold couplers.
For example, JIS fixed clamp is 0.65KG while the BS British fix coupler is 0.85 KG.
Japanese(Korean) standard scaffold couplers are used in JIS pipe scaffolding system. The pipe scaffolding are using 1.8-2.4mm GI scaffolding pipes in the construction.
So if you want a light weight scaffolding, you can choose JIS/Korean standard scaffold clamps.
Some scaffolding clamps like scaffold sleeve couplers are always pressed steel type. There are no drop forged sleeve couplers.
Cast iron scaffold couplers are the cheapest scaffolding clamps. There are simple in manufacturing and the cost is less than the forged and pressed steel scaffold fittings. Some countries like Ethiopia and Bangladesh prefer cast iron scaffold couplers to save construction costs.

10.2 How to Choose Scaffolding Coupler Sizes

If you do not know how to choose scaffolding coupler sizes. There is a simple way to solve it. You just need to know what is the diameter of your scaffolding poles or scaffold tubes. If your scaffold the tube outer diameter is 48.3mm, you can choose OD48.3mm scaffold couplers. The same way to decide OD42mm, OD60mm, OD76mm, and OD89mm scaffold couplers.

10.3 EN74 Class A and EN74 Class B Scaffold Couplers

In BS and EN74 standards, you can find 2 classes of scaffolding couplers. Include

• Class A Scaffolding Coupler
• Class B Scaffolding Coupler

Basically, Class A is lighter duty than Class B scaffold couplers in weight-bearing. Class B scaffold coupler allows more load(KN). For construction design, most companies ask Class B for double couplers. While for swivel couplers, Class A is acceptable.

10.4 Choose Hot Dip Galvanized Or E-galvanized Couplers?

For anti-corrosion purposes, you can ask for hot-dip galvanized scaffolding couples or E-galvanized(zinc-plated) finished clamps.

E-galvanized Scaffolding Couplers

E-galvanized(electro-galvanizing) scaffolding coupler is also called cold galvanized or zinc plated scaffold clamps. Compare to hot dip galvanized scaffolding couplers, E-galvanized scaffolding clamps with less zinc on the coupler surface. The cold galvanizing process decides the zinc can not protect the scaffolding coupler from corrosion as well as the hot dip galvanizing. That is why zinc-plated scaffolding couplers will start rusty after 1-3 years.

Hot Dip Galvanized Scaffolding Couplers

Hot dip galvanized are the most durable surface treatment for scaffolding couplers. The zinc thickness on the scaffolding coupler covers and the base surface will be more than 40 micros.
HDG scaffolding coupler life can be 10-20 years. HDG cost is very expensive. That is why HDG scaffolding coupler prices are much higher than the cold galvanized scaffold fittings.
HDG scaffolding couplers are required by a lot of industries, like industrial, commercial, and infrastructural construction, shipbuilding scaffolding, etc.
It is also used in permanent scaffolding construction like maintenance, and repair work for gasoline equipment and pipelines, for oil gas companies.
A lot of onshore and offshore scaffolding projects and marine scaffolding projects required the scaffolding couplers must be finished in hot dip galvanized too to extend scaffolding material life under wet and salty atmosphere.
The zinc thickness for the hot-dip galvanized scaffolding couplers are more than 40 micros. More than the zinc thickness, Wellmade does adhere to test galvanizing quality for both zinc-plated and hot-dip galvanized scaffolding couplers according to CE requirements.  Our scaffolding coupler durability is more than normal scaffold factories. 
it is not as durable as hot dip galvanized scaffolding couplers.

Though the HDG coupler is the most durable scaffolding coupler, most construction companies choose cold galvanizing to save construction costs.

10.5 Choose Quick Threaded Bolted or Normal Bolted Scaffold Couplers?

There are 2 types of threaded scaffolding couplers bolts and nuts: 1) Quick Threaded(Round Threaded) Bolt & Nut 2) Normal Threaded(Acme Thread) Bolt & Nut

The quick-threaded bolts are also called strong/reinforced scaffold coupler bolts. They can take heavier loads than normal type bolted scaffold couplers.
The quick threaded scaffolding couplers and clamps are used mainly in German-type scaffolding couplers. Scaffolding companies like Layher and Peri use quick-threaded bolts for their scaffold fittings.
The quick-threaded bolts are with wider teeth. So can run and screw easily even after hot dip galvanizing(with thick zinc).
Both quick threaded and normal threaded bolts are 8.8 high classes for Wellmade scaffolding couplers.

10.6  Different Country Scaffolding Couplers

Wellmade is the scaffolding coupler manufacturer exported to global 58 countries. Which country are you from and how to choose the right scaffold couplers and clamps for your scaffolding construction? Following are the scaffold coupler buying guides for different countries.

• BS standard scaffolding couplers

BS scaffold coupler is a British-type scaffold tube clamp. It is the most popular type of scaffold couplers globally wide. The reason is the British scaffold fittings are used not only in British and some European countries. But also used in most Asia countries, Middle East Gulf Countries, African Countries, etc.
British standard scaffold couplers are always with 21mm cross nut with washer.
It is also a scaffolding Standard accepted by most countries in the Middle East, Africa, and South East Asia.

• Australian Scaffolding Coupler

Australian type scaffolding couplers are confirmed to AS/NZ standard. This type of scaffold clamps is not as popular as British scaffold clamps. They are used only in Australia and sometimes in New Zealand.
Australia scaffold couplers are heavier weight and always with a 23mm bolt nut. The 23mm nuts are flange nuts, no need for any extra washers. These are the main difference from British standard scaffold fittings.
Australian standard scaffolding couplers are always drop forged. The AS standard scaffolding coupler types include double coupler, swivel coupler, putlog coupler, girder clamps, etc.

• Germany Type Scaffolding Couplers

Germany Scaffolding Couplers are always drop forged. They are heavier than British standard scaffold fittings. For example, the German type swivel coupler is 1.45KG, While the British type forged swivel coupler is 1.20 KG.
Germany scaffold clamps are conformed to EN 74 Class B. In bolt and nut, German scaffold clamps always use 22mm flange nuts. According to the bolt type, there are quick threaded bolt clamps and acme threaded bolt couplers.

• American Type Scaffolding Couplers

American Scaffolding Coupler: Scaffolding clamps for the United States are the heaviest type of scaffolding couplers among all countries.
The USA scaffolding clamps sizes are various too from 2″ to 3.5″. Especially OD89mm scaffold right angle, swivel, and half couplers for New York City sidewalk shed construction.
All American-type scaffold clamps use 22mm flange nuts. The USA-type scaffold clamps include I bolt scaffold double and swivel clamps. There are also fixed and swivel wedge clamps. The scaffold wedge clamps are used for aluminum scaffold tubes in construction.

• Japanese and Korean Standard Scaffolding Clamps

Japanese scaffolding couplers are pressed steel types of scaffold fittings. They are used to fix the OD48.6mm JIS standard steel scaffolding GI pipes.
JIS standard scaffold clamps include JIS fixed clamps, JIS swivel clamps, JIS Fixed Beam Clamps ( C Clamps), JIS swivel beam clamps, inner bone joints, and base plates, etc.
Korean standard scaffolding clamps are similar to Japanese standard scaffold clamps. There are light weight and used to fix an OD48.6mm scaffold tube.
In Korean standard scaffolding, there is a type of rivet pipe scaffold system. The rivet scaffolding pipe needs to be connected to each other by special rivet scaffold clamps. The rivet scaffolding clamps include rivet joint pins, and rivet base plates.

• Chile Scaffolding Couplers

Chile scaffolding couplers are similar to British scaffold fittings. But the bolt nuts need to be a 22mm flange nut.

10.8 Buy Scaffolding Coupler From Local or Import From China

If you want to buy scaffolding couplers. The following points can help you to decide where to buy the scaffolding products.

• Required Quantity

If the quantity is less than thousands, you can consider buying the scaffolding couplers from the local companies. Import from China or India may not be cheaper than the local coupler price. Local scaffold companies may bring you immediate supply and easy sourcing.
Big quantities of scaffolding coupler requirements can import from China or India. Buying direct from the scaffold coupler manufacturers can save your cost if full containers quantity.

• Customized Logos& Marks

If you want a customized logo, you can buy it from China coupler manufacturer. Chinese scaffolding couplers always offer OEM service to put your companies’ logos and marks on the products.

• Delivery Time

If you want the scaffold coupler and clamps very quickly. Better buy from local companies. They can offer an immediate supply according to your construction projects.
Import scaffold couplers from China need to consider production lead time as well as international transportation time.

10.8.1 Benefits of Buying Scaffold Couplers and Fittings from Wellmade

1. Safety Scaffolding Coupler Material with Test Reports & Certificate
2. 20 years of scaffolding coupler manufacturing experiences
3. professional in oil gas companies’ scaffold couplers supplying
4. OEM manufacturer for scaffolding companies
5. Free embossed with your logo and marks
6. HDG and Zinc Plate finishing (both available)
7. One year warranty
8. Good price & save your cost
9. Door to Door delivery in global wide (58 Countries at Present)
10. Fast delivery (50,000 sqm big production capacity)
11. One-stop scaffolding material sourcing(Tubes, Planks, Scaffold Systems)
12. Give professional consult
13. Immediate reply within 24 hours

Wellmade’s Scaffolding Work Experience Introduction

Wellmade manufactures scaffolding couplers not only for civil construction, and building construction, our scaffold couplers and clamps are used for a lot of industrial and commercial construction. Include oil gas industry, power plant, chemical plant, etc. Famous oil gas companies like Shell, Sinopec, China Petroleum, KNPC, and KOC use Wellmade’s scaffold couplers and fittings for their onshore and offshore projects, equipment&pipeline repairs&maintenance.

In government infrastructure construction, you and find the Wellmade scaffold clamps are used in highway construction, bridge construction, airport construction, sports stadium construction, etc.  Meanwhile, Wellmade scaffold couplers are famously used in Russian World Cup and Beijing Olympic Stadium Construction.

You can find all types of scaffolding couplers here. All of them conform to international scaffolding standards, including EN74, BS, AS, etc.

60% Scaffolding &Formwork Companies Buy Scaffold Couplers from Wellmade

As a leading scaffolding coupler manufacturer in China. Our scaffold clamps are imported by scaffolding companies, formwork, and engineer companies globally wide. You can find our scaffolding couplers in 58 countries.
So far, Wellmade provides an innovative solution for scaffolding couplers to moreover 500 companies including big, medium, and small businesses.

We will provide you with a comprehensive turnkey scaffolding coupler solution in the leading market. You can contact us if you have any requirements or questions about our scaffolding couplers. Our sales team will revert to you within 24 hours.

Send Us An Inquiry Now.

For more Scaffolding Sleeve Couplerinformation, please contact us. We will provide professional answers.