Forged & Pressed Right Angle Couplers

Wellmade Right Angle Coupler

Wellmade right angle coupler is also called double scaffold clamps. It is a type of scaffold connectors fix scaffold tubes at a 90 degree. You can name it rigid clamps, fixed clamps, etc.

According to the structure fabrication process, you can find both pressed steel type and forged type right angle couplers.

Drop Forged Right Angle Couplers

Drop forged scaffolding right-angle couplers are the most used scaffolding fittings in tubular scaffolding construction. You can find both quick thread and normal thread drop-forged right-angle couplers in Wellmade.

Quick threaded forged right-angle couplers are manufactured for German scaffolding companies.  With quick and wider screws and threads, it is much stronger than normal threaded right-angle couplers mechanically. Thus quick threaded right angle couplers are also called strong scaffolding right angle clamps.

In manufacturing, Germany-type quick threaded right-angle couplers are always hot-dip galvanizing finishing.  Hot-dip galvanized is called HDG finishing. It is the most durable scaffolding coupler surface treatment.  While the wide screw quick threaded makes the right angle coupler much easier in the tubular scaffolding erection and dismantles, even after hot dip galvanizing finishing.

Normal threaded right angle couplers are the most traditional scaffolding double coupler.  Not only Germany type scaffolding right-angle couplers but US type, British type, Australia type are all with normal threaded screw teeth.

Forged scaffolding right angle couplers are used to connect both heavyweight 4.0mm scaffold tubes and normal weight 3.2mm scaffold tubes.

Pressed Steel Type Right Angle Coupler

Drop forged right angle couplers are forging from steel round bars under high temperatures. While pressed steel right angle couplers are manufactured from high-strength scaffolding steel plates.

There are British standard pressed steel right-angle couplers. and Japanese Korean Type pressed fixed clamps in Wellmade.

British Standard Pressed Steel Right Angle Coupler

British standard pressed steel right angle coupler is made from high strength 5mm steel plates. Different from British forged right angle couplers, the pressed steel right angle couplers are used to connect 3.2mm steel scaffolding tubes. Wellmade produce the British standard right angle couplers according to EN 74 and BS 1139 standard.  According to the scaffold tube diameters, British pressed steel right angle couplers are able to be in sizes of O.D 48.3mm and O.D 60.3mm.

In addition, you can find both E-galvanized and hot-dip galvanized British standard pressed steel right-angle couplers for your tubular scaffolding system.

HDG makes the right-angle couplers more durable in long-term recycling construction. According to the galvanizing color, there are yellow(golden) scaffolding right-angle couplers and blue or white galvanizing for the pressed steel right angle coupler scaffolding.

Japanese and Korean Standard Pressed Right Angle Couplers

Japanese standard pressed steel right angle coupler is also called JIS Fixed Clamps. It is used to connect O.D 42.7mm to O.D 48.6mm scaffolding pipes. O.D 48.6mm  GI scaffolding pipes are Japanese standard steel pipes. Wall thickness is 2.4mm.

Korean standard pressed steel right angle coupler is similar to JIS standard fixed clamps. It is used for O.D 48.6mm steel GI pipe too in the scaffolding pipe and fitting system.

Both Korean and Japanese standard pressed steel right angle couplers are made from 3mm steel plates. Wellmade JIS and Korean standard right-angle couplers are tested and certified by SGS according to JIS 8951 and KSD 3501.

JIS and KS standard scaffolding right angle clamps are also in golden color zinc plated. While you can find white galvanizing and hot-dip galvanizing finishing too.

Scaffolding Right Angle Coupler Bolts and Nuts

Bolt and nuts are the necessary elements for the scaffolding right angle couplers.  Wellmade manufactures all of the right angle scaffold couplers with 8.8 top-class scaffolding bolts. In order to make sure the scaffolding bolt stable quality, We sampling test each batch of bolts in manufacturing.  Most right-angle couplers bolts are T bolts. While the USA type(American type) right angle couplers are using I bolts.  According to normal duty and heavy-duty, there are M12 to M14mm bolts for different types of scaffolding right angle couplers.

Right angle coupler scaffold nuts are customized according to your country’s customs and requirements. For example

• If you are from Germany, the right angle coupler nuts are 22mm flange nuts.
• If you are from Australia, the right angle coupler nuts should be 23mm flange nut
• If you want USA-type scaffolding right-angle couplers, the bolts are 22mm flange nut too.
• Most countries using British type right angle coupler scaffolding, thus, the bolt nut is a 21mm cross nut with a washer

The scaffolding right angle coupler bolt and nuts are matched with the scaffolding spanners ratches during construction scaffolding erection and dismantles.

Sizes of Scaffolding Right Angle Couplers

Scaffolding right angle coupler sizes are depended on the scaffolding pole diameters. The most common scaffolding poles are in O.D 48.3mm. While there are also O.D 42.7mm, O.D 60mm scaffolding poles.

More than fix 2 scaffolding pipes,  the right angle couplers are able to fix props to scaffold tubes and bridge legs to scaffold tubes.

Thus scaffolding right-angle couplers include the following sizes

Scaffolding Right Angle Couplers Capacity

Wellmade drop-forged right-angle couplers are tested according to EN 74-1 Class B scaffolding standard. The ultimate capacity is more than 56 KN, which is almost double of EN74 Class B failure strength load requirement of 30KN. While BS1139 standard pressed steel right angle coupler ultimate capacity is more than 22 KN, which is meet up EN 74 Class A standard.

Wellmade Japanese standard right angle coupler scaffold is tested according to JIS 8951 standard. The average break load capacity is 16137N, which is more than the Japanese standard requirement of 15691N.

More than the failure load capacity, Wellmade right-angle couplers also test slipping forces, etc. A relative test report will be offered if needed.

More Scaffolding Couplings

More than scaffolding verticals and ledgers, there are other scaffolding elements needed. Include scaffolding plank boards, ladders, braces, toe boards, scaffold beams, etc.

These scaffolding elements need to be fixed by different scaffolding couplings onto the scaffolding frames. According to the scaffolding coupling functions in the tubular scaffolding. You can find the following scaffolding fittings:

1. Boards Clamps: Fix scaffold board to scaffold horizontals
2. Ladder Clamps: Fix scaffold ladders to the scaffold frames
3. Putlog Clamps: Fix scaffold transoms to scaffold ledgers at a right angle
4. Fixed Beam Clamps: Fix scaffold beams to scaffolds at a right angle
5. Swivel Beam Clamps: Fix scaffold beams to scaffolds at any angles
6. Swivel Clamps: Fixed scaffold tubes and poles at any angles
7. Stair Treads Coupler:  Fix scaffold treads on scaffold frames
8. Limpet Clamps: Lightweight board clamp fixing scaffold boards

All of the scaffolding couplings are tested according to scaffold standards. more information, pricing, and consulting are available by mail.

Right Angle Coupler FAQ