Scaffolding Sleeve Coupler Manufacturer | External Box Clamp

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Scaffolding Sleeve Coupler (Box Clamp) - 48.3mm

External End-to-End Tube Joiner. The Hebei Taihe Construction Equipment Co., Ltd. Sleeve Coupler (Box Clamp) is designed to join two 48.3mm scaffold tubes externally. It aligns the tubes perfectly and provides high tensile strength for extending standards. Function: Axially connects two tubes (End-to-End). Type: External Sleeve (Wrap around). Standard: EN74 Class B / BS1139. Safety: Internal steel rib ensures equal insertion depth.

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🔗 Tube Joiner

Scaffolding Sleeve Coupler
(Box Clamp / External Joiner)

Extend your scaffolding height securely with the Taihe Scaffolding Sleeve Coupler. Often called a box clamp scaffolding fitting, it is designed to join two 48.3mm tubes end-to-end. It works perfectly alongside our Double Couplers for stable structures.

  • ✓ Function: Connects tubes end-to-end ( Axial ).
  • ✓ Standard:  EN74 48.3mm sleeve fitting ( Class B ).
  • ✓ Safety: Internal steel divider ensures equal insertion.
Sleeve Coupler - 27
Why Choose Taihe

Secure Connection

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Safe Joining

The safest scaffold tube joiner. It wraps around the tube ends externally, providing rigid alignment and high tensile strength.

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Center Stop

An internal steel rib ensures that both tubes are inserted equally (center-positioned) for maximum stability.

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Durability

Made from high-quality pressed steel with a galvanized finish. Resists deformation and corrosion on site.

Technical Specifications

Parameter Specification Details
Product Name Scaffolding Sleeve Coupler
Alias Box Clamp / External Sleeve Clamp
Material High Grade Pressed Steel
Tube Fit Standard 48.3mm Scaffold Tubes
Weight 1.00kg - 1.20kg
Standard EN74 sleeve coupler (Class B) / BS1139

Hebei Taihe Construction Equipment Co., Ltd. Strength

Huge capacity for pressed and forged scaffold fittings.

CAPACITY Fast Stamping

Automated stamping lines produce thousands of box clamps daily.

QUALITY Slip Testing

Rigorous testing to meet EN74 Class B tensile requirements.

STOCK In Stock

Standard galvanized sleeve couplers are always ready to ship.

OEM Marking

Custom markings available on the sleeve cover.

Applications of Box Clamps

The Scaffolding Sleeve Coupler is the standard component for connecting ledger or standard tubes axially (end-to-end). While Swivel Couplers are for diagonal connections, the box clamp is purely for extending the length of the scaffold.

As an external sleeve clamp, it provides a rigid joint that can handle both tension and compression loads. This is crucial when building tall structures where standards need to be joined securely.

Production Line

Taihe manufactures high-quality scaffolding sleeve couplers. The pressed steel body ensures a uniform fit around the tube, while the center rib guarantees safety.

  • 🔥 Forming: Precision stamping for perfect shape.
  • 📏 Assembly: Strong T-bolt installation.

Packing & Shipping

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📦 Woven Bag

25 pcs per bag. Easy for manual handling.

Scaffolding Sleeve Coupler detail image 3
🚢 Pallet

Palletized for safe transport and forklift unloading.

FAQ: Sleeve Couplers

Q: What is a Box Clamp?

A: Box Clamp is a common site name for the scaffolding sleeve coupler. It joins two tubes end-to-end.

Q: Is it EN74 certified?

A: Yes, our EN74 sleeve coupler meets Class B standards, ensuring high tensile and bending strength.

Q: Internal vs External?

A: An external sleeve clamp wraps around the outside of the tube, offering stronger support than an internal joint pin.

Complete System

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Get a Quote Today

Direct factory price for Scaffolding Sleeve Couplers.

About Hebei Taihe Construction Equipment Co., Ltd. Taihe is a leading manufacturer of scaffolding components. Our couplers are exported to 50+ countries.