Drop Forged Double Coupler BS1139 Galvanized
Drop Forged Double Coupler BS1139 Galvanized
Drop Forged Double Coupler BS1139 Drop Forged Double Coupler BS1139 Galvanized
Drop Forged Double Swivel Coupler BS1139 Galvanized
Drop Forged Double Coupler BS1139 Packing
  1. Drop Forged Double Coupler BS1139 Galvanized
  2. Drop Forged Double Coupler BS1139 Galvanized
  3. Drop Forged Double Coupler BS1139 Drop Forged Double Coupler BS1139 Galvanized
  4. Drop Forged Double Swivel Coupler BS1139 Galvanized
  5. Drop Forged Double Coupler BS1139 Packing

Drop Forged Double Coupler (48.3mm) – BS1139 Standard | Bonin Scaffolding

Items: Double Coupler

Size: 48.3*48.3mm

Type: YH158/YH158D

Standard: BS1139

Surface: EP HDG Paint

Suitable For: Europe, Middle-East

Contact us today to get a quote or to discuss your custom requirements. We supply reliable scaffolding parts for projects of any scale.

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Overview The Bonin Drop Forged Double Coupler (Type YH158/YH158D) is a critical load-bearing component used to connect two scaffolding tubes at right angles. Manufactured through a precision drop-forging process, this clamp offers superior structural integrity compared to pressed steel couplers, making it the preferred choice for heavy-duty industrial and commercial projects.

Key Features & Benefits:

  • Certified Safety (BS1139 Compliant): Our couplers are rigorously tested to meet BS 1139 and EN 74 standards. The anti-slip design ensures a secure grip on 48.3mm steel pipes, preventing structural movement under load.

  • Durable Surface Treatments:

    • Hot Dip Galvanized (HDG): Recommended for Middle-East projects or offshore applications. Provides maximum corrosion resistance against high humidity and salinity (Min thickness 45-60µm).

    • Electro Plated (EP) / Painted: Cost-effective solutions for standard construction environments in Europe and inland regions.

  • Robust Construction: Featuring high-grade T-bolts (Grade 8.8) and thickened washers, the Type YH158/YH158D coupler ensures easy maintenance and a long service life, reducing replacement costs for rental companies.

Application Scenarios:

  • Oil & Gas Refineries (HDG type recommended)

  • Infrastructure & Bridge Construction

  • Commercial Building Facades

  • Tube and Clamp Scaffolding Systems

FAQ

Q: What is the difference between EP and HDG finish for double couplers?

A: EP (Electro Plated) offers a smooth, shiny finish suitable for dry environments. HDG (Hot Dip Galvanized) involves dipping the coupler in molten zinc, creating a thick protective layer perfect for humid or coastal climates, offering 5-10+ years of rust protection.

Q: Can this coupler fit 48.6mm tubes?

A: Yes, our BS1139 48.3mm couplers are designed with a tolerance that allows them to securely clamp standard 48.3mm and JIS 48.6mm scaffolding tubes.

Q: What is the MOQ for Type YH158 couplers?

A: Our standard MOQ is 1 pallet (approx. 1000 pcs), but we support mixed container loading with other accessories like sleeve couplers and jack bases