Hanpiao Metal – A professional building materials supplier and OEM/ODM manufacturer of formwork and scaffolding, with a history dating back to 2002.

Forged EN74/BS1139 Single Clamp

Our EN74/BS1139 forged single putlog clamp is drop-forged Q235 steel with galvanized finish. Weighs 0.6~0.65kg and matches standard 48.3mm scaffold tubes for 90° non-load-bearing connection. Used for scaffold working platform and guardrail installation with Grade 8.8 bolts. Free samples and OEM customization are available.

Sample:

Available, Sample for Free

Transaction Terms:

EXW、FCA、CPT、CIP、DAP、DPU、DDP

Shipping Port:

Tianjin Port

MOQ:

100000 pieces

Weight:

0.6-0.65kg

Surface Treatment:

Galvanized Silver

Material:

Steel

Suitable:

42.7mm/48.6mm/50mm/60mm tubes

Standard:

British/German

Type:

Forged EN74/BS1139 single clamp

Model:

British/German type

Delivery time:

25 Days

Packing:

Woven bag/Ton bag/Carton/OEM/ODM

Color:

Silver

Place of Origin:

China

Size:

48.6mm*48.6mm(48.3mm*48.3mm)

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Product Information

Benefits of forged en74/bs1139 single clamp

En74 forged single couplers

En74 forged single couplers, also widely referred to as putlog couplers or “pig ear” Clips, are non-load-bearing scaffolding fittings used to connect transom or putlog tubes to ledgers at a fixed 90°angle. Unlike swivel couplers and double couplers, they feature only one clamping point and are mainly designed for constructing working platforms, rather than providing structural support.

Key specifications & technical details

Standards compliance

Conforms to en 74-1 and bs 1139 standards.

Load performance

Safe working load (swl) against slip is approximately 0.53 kn to 1.07 kn.

Weight

Generally 0.6 kg to 0.65 kg, roughly half the weight of a swivel coupler.

Tube compatibility

Suitable for standard scaffolding tubes with an outside diameter of 48.3 mm (1.9").

Material & manufacturing

Made of high-grade q235 carbon steel, produced by drop forging for enhanced durability and strength.

Fasteners

Fitted with 1/2" Diameter grade 8.8 t-bolts and nuts, compatible with standard 21 mm or 23 mm scaffold spanners.

Surface treatment

Electro-galvanized (zinc-plated) for general applications; hot-dip galvanized (hdg) for superior corrosion resistance in harsh or offshore environments.

Main applications

Transom-to-ledger fixing: Secure horizontal transom tubes (used to support scaffold boards) to longitudinal ledger tubes.

Guardrail & midrail installation: Fasten non-structural guardrails and midrails to vertical standards.

Toe board fixing: Attach toe boards to the scaffold frame to prevent tools and small materials from falling.

Safety considerations

Non-load-bearing design: Must not be used for primary structural joints or to resist significant tension or compression loads. Double (right-angle) couplers should be used for such purposes instead.

Tightening torque: Recommended tightening torque is 54 nm to ensure reliable clamping without distorting the coupler.

Regular inspection: Periodically inspect the coupler body and clamping flap for bending or distortion caused by overloading or improper use.

FAQ

Q: What about after-sales service?

A: All our products are thoroughly tested before shipment, and we have a comprehensive traceability system in place. If you encounter any issues with a product, please contact our after-sales service team and provide photos and/or videos to help us diagnose the problem. We will then either arrange for a replacement or offer reasonable compensation, subject to mutual agreement.

Q: What payment terms do you accept?

A: We typically accept T/T and L/C. Other terms are also negotiable and can be discussed based on the order details.

Q: What is your MOQ?

A: Generally, our MOQ is one full container. However, for special products or specific customer needs, we are open to discussing flexible order quantities.

Q: Can we customize products with our company logo or name?

A: Yes, we offer customization options such as permanent engraving or adhesive stickers, depending on your requirements.

Q: What is your typical lead time?

A: Once the order is confirmed, Hanpiao Metal will develop a production schedule aligned with your delivery expectations and ensure all processes are carried out accordingly.

Q: Can you provide engineered drawings if needed?

A: Yes. Hanpiao Metal has a team of professional engineers experienced in designing complex scaffolding access solutions and can provide detailed engineered drawings upon request.

Get in Touch with Us

Over years of production and operation, we have always adhered to the principle of "Providing customers with premium products and services, and continuously improving customer satisfaction". Contact us for custom orders and receive free samples!