Buy scaffolding couplers

Scaffolding couplers securely connect individual scaffolding components, thereby forming the cornerstone of stability, load-bearing capacity and flexible structures in scaffolding. Whether pipe-to-pipe connections, angle connections or swivel solutions – couplers are essential safety components for any scaffolding system.

Quality check: When is a second-hand coupler safe?

Every coupler at CETRAC undergoes a manual functional test:

1. Thread integrity: We check whether the flanged nut (SW19 or SW22) can be turned easily as far as it will go. Any encrusted cement residue is removed, or the coupler is rejected.
2. Flange integrity: The retaining flanges must not be bent, in order to ensure full contact with the pipe (48.3 mm Ø).
3. Certification marks: We ensure that certifications are legible (e.g. EN 74), as these are often required for acceptance on German building sites.

Our guide, ‘Scaffolding Safety: Permits, Obligations & Standards’, summarises the key points to bear in mind when erecting and inspecting scaffolding.

Scaffolding coupler: Areas of application

• traditional facade scaffolding
• Industrial and scaffolding structures
• Bracing, stiffeners, special structures
• temporary stages, suspension systems, temporary structures
• Civil engineering works, refurbishment, prefabricated construction

An overview of scaffolding couplers

Standard couplings

Couplers for standard pipe-to-pipe connections at a 90-degree angle.

• solid foundation
• most common application in scaffolding

Rotary couplings

Flexible couplers for freely adjustable angular connections.

• ideal for complex geometries
• universal for custom designs

Bracing struts and diagonal couplers

Couplers for securing struts and bracing elements.

• ensure vertical and horizontal stability
• frequently used for bracing and special supports

Parallel couplings

Couplers for parallel pipework.

• ideal for additions and reinforcements
• frequently used in industrial and specialist scaffolding

Heavy-duty and reinforced couplers

For areas with higher requirements in terms of load-bearing capacity and safety.

• reinforced construction
• Suitable for use in high-load applications and special designs

Accessories for coupling areas

Additional components for secure fastening technology.

• Screws & Spare Parts
• Safety components
• Connection technology for system solutions

All scaffolding couplers are available for immediate delivery:

Maintenance tip from CETRAC

Second-hand couplers will last almost forever if looked after properly. We recommend that our customers briefly treat the threads with a biodegradable spray oil after purchase. This saves valuable time during assembly on site and protects the tools (ratchet/impact wrench).

Calculate scaffolding area

Are you putting your scaffolding together from individual parts? With our EasyFlow scaffolding area calculator, you can first work out the scaffolding area you need – so you’ll know exactly how many couplers and other components you’ll require. It’s free, with no obligation, and takes just a few seconds.

FAQ – Scaffolding couplers

Scaffold couplers connect scaffold tubes and components securely and ensure stability, bracing and the exact alignment of the entire scaffold. Without them, no tube-and-coupler scaffold could be erected safely. You can also get the matching scaffold tubes inspected and ex warehouse from CETRAC.

Yes. Scaffolding couplers must comply with the applicable standards depending on their intended use – the relevant standard is DIN EN 74, supplemented by DIN EN 12811 for the scaffolding as a whole. All couplers offered by CETRAC are tested and comply with the relevant standards. Find out more about standards and requirements in the Scaffolding Safety Guide.

Right-angle couplers connect two tubes rigidly at a 90-degree angle and transfer loads at right angles. Swivel couplers, on the other hand, allow the angle to be adjusted freely – ideal for diagonals, slopes and special structures. We stock both variants inspected; you will find an overview under scaffold couplers.

With standard pipe couplers (48.3 mm), this is often possible without any problems; with system-specific couplers, it depends on the manufacturer. The pipe diameter and design are the key factors. If in doubt, we’ll check compatibility for you in advance – you can find an overview in our range of scaffolding parts.

You need heavy-duty couplers when higher static loads occur or components need additional reinforcement – for example with shoring scaffolds, large cantilevers or heavy attachments. They transfer much higher forces than standard couplers. You will find suitable variants under scaffold couplers.

Yes, provided they do not have any cracks and the threads can withstand the required tightening torque (approx. 50 Nm) – so always check second-hand couplers for wear and cracks. At CETRAC, you will only receive goods that have been tested for functionality.

In Germany, AF19 and AF22 are standard. Check your existing tools for the correct assembly. We stock both variants in large quantities in our Leipzig warehouse.

Yes, screws and safety devices in particular may need replacing after heavy use – suitable spare parts will extend the service life of your couplers.

You can always find suitable spare parts and couplers in the scaffolding couplers section – either individually or as a set.

As we currently have 15,000 couplers (standard couplers, rotary couplers, etc.) in stock, we are offering attractive volume discounts for purchases of mesh boxes. Just get in touch!