Scaffold girder couplers are known by various names depending on the region and industry. Commonly referred to as "girder couplers" in the UK, Europe, and many parts of Asia, they are sometimes called "ledger couplers" when connecting ledger tubes specifically. In North America, especially the US and Canada, similar components are often called "beam clamps" or "scaffold beam couplers."
Product Description
Scaffold girder couplers are known by various names depending on the region and industry. Commonly referred to as "girder couplers" in the UK, Europe, and many parts of Asia, they are sometimes called "ledger couplers" when connecting ledger tubes specifically. In North America, especially the US and Canada, similar components are often called "beam clamps" or "scaffold beam couplers." The terms "fixed coupler" or "rigid coupler" emphasize their characteristic of providing a non-swivel, 90-degree rigid connection between scaffold tubes or girders.
| Region / Country | Typical Product Standard | Typical Tube Size (mm) | Bolt Thread Type | Surface Treatment | Notes |
|---|---|---|---|---|---|
| Europe (UK, Germany) | EN 74 (Part 1 & 2) | 48 | Coarse or Quick thread | Hot-dip galvanized | Strict quality tests; CE marking |
| USA & Canada | OSHA compliant, ANSI standards | 1.9 inch (~48 mm) | UNC coarse thread | Galvanized or painted | Beam clamps more common term |
| Australia & NZ | AS/NZS 1576 | 48 | Coarse thread | Hot-dip galvanized | Often require load certificates |
| China | GB/T 3091 / Industry standards | 48 | Quick thread or coarse | Electro-galvanized or painted | Growing market, price sensitive |
| Middle East | Mix of European/US standards | 48 | Coarse thread | Galvanized | Usage depends on project specs |
| Parameter | Typical Value | Unit | Notes |
|---|---|---|---|
| Material | Forged Steel Grade 8.8 | - | High tensile strength steel |
| Tube Diameter Compatibility | 48 | mm | Standard scaffold tube size |
| Bolt Diameter | M16 | mm | Coarse or quick thread bolts |
| Maximum Load Capacity | 10,000 | N (Newton) | Static load capacity per coupler |
| Weight | 0.75 - 0.9 | kg | Varies by model |
| Surface Coating Thickness | 50 - 85 | μm (microns) | Hot-dip galvanization typical |
| Corrosion Resistance | >500 | hours (salt spray test) | Typical durability in harsh environments |
| Operating Temperature | -40 to +80 | °C | Suitable for outdoor construction |
1. Formwork Support Structures
In concrete construction, formwork is essential to shape and support poured concrete until it hardens. Scaffold girder couplers are widely used to connect horizontal girders and beams that hold formwork panels securely in place. By providing a rigid and stable connection, these couplers ensure the formwork system maintains its shape and can bear heavy loads during concrete pouring, preventing deformation or failure.
2. Heavy-Duty Scaffolding Frameworks
Scaffold girder couplers are critical components in building heavy-duty scaffolding frameworks used in construction projects. They join large scaffold tubes and girders at right angles to create strong, load-bearing platforms and support systems. This enables workers to safely access high and difficult-to-reach areas with stability and reliability, even under heavy load conditions.
3. Temporary Support Beams on Construction Sites
During various stages of construction, temporary support beams are needed to stabilize structures or provide additional strength to partially completed frameworks. Girder couplers connect scaffold tubes to form these temporary beams quickly and securely. This flexibility in assembly allows for rapid adjustments and ensures safety on dynamic construction sites.
4. Industrial Maintenance Platforms
Industrial facilities often require elevated platforms for maintenance, inspection, or repairs on machinery, piping, and infrastructure. Scaffold girder couplers help build customized, strong scaffold platforms that can withstand frequent use and heavy equipment loads. Their rigid connection guarantees platform stability, ensuring worker safety in industrial environments.
5. Bridge and Tunnel Scaffolding
In infrastructure projects like bridge and tunnel construction or repair, scaffolding must adapt to complex shapes and heavy structural loads. Scaffold girder couplers enable the creation of robust, stable scaffold frameworks that can support workers, tools, and materials securely in these challenging environments. Their corrosion resistance also makes them suitable for long-term use in outdoor and harsh conditions.
Tags
