EN74 BS1139 Steel galvanized forged pressed cast iron type swivel coupler clamp

Our EN74 / BS1139 compliant Steel Galvanized Swivel Coupler Clamps are precision-engineered scaffolding components designed to securely connect tubes at any angle in tubular scaffolding structures. Available in both drop-forged and pressed steel variants, these couplers provide reliable, high-strength connections essential for construction, industrial maintenance, and temporary structural applications.

Manufactured from Q235 grade steel with a protective hot-dip galvanized or electro-galvanized surface finish, these couplers deliver exceptional corrosion resistance and structural integrity even in demanding outdoor and coastal environments. Compliance with EN74-1 and BS1139 standards ensures they meet rigorous international safety and quality benchmarks for scaffolding fittings

Key Features & Benefits

• Dual Manufacturing Options: Choose between drop-forged couplers for maximum strength and heavy-duty applications, or pressed steel couplers for a cost-effective balance of performance and economy.

• BS1139 & EN74-1 Certified: Fully compliant with British and European scaffolding standards, ensuring safety and regulatory acceptance on professional construction sites.

• Versatile Swivel Design: Allows connection of scaffold tubes at any angle, providing flexibility for complex scaffolding configurations, bracing, and diagonal supports.

• Superior Corrosion Protection: Hot-dip galvanized or electro-zinc plated surface treatment delivers long service life, even in high-humidity or salt-exposed environments.

• High-Strength Material: Constructed from Q235 steel with Grade 8.8 T-bolts and nuts, ensuring reliable load-bearing capacity and slip resistance.

• Secure Fastening: Equipped with 1/2" x 82mm T-bolts and standard spanner-size nuts (AF 21mm–23mm) for rapid, torque-accurate assembly and disassembly

Dimensional Reference & Weight Table

Custom diameters, bolt lengths, and surface finishes available upon request.

Typical Applications

• High-rise building internal and external grid scaffolding

• Bridge, viaduct, and tunnel formwork support systems

• Industrial plant maintenance and inspection platforms

• Temporary grandstands, stages, and event structures

• Offshore and coastal construction projects requiring premium corrosion resistance

Quality Assurance & Compliance

All our swivel coupler clamps undergo rigorous roundness testing and slip/load safety testing in accordance with EN74-1 Class B requirements. Products are backed by ISO 9001 quality management systems and, where applicable, CE and SGS certifications. Consistent production processes ensure reliable torque performance, bolt security (with captive nuts to prevent loss), and dimensional accuracy.