Beam Clamps: Secure and Versatile Solutions for Structural Connections
Beam clamps—also known as Girder Couplers—are essential components for attaching scaffold tubes and accessories to I-beams, girders, and other structural members. Avanza Steel's beam clamps are precision-engineered from drop-forged mild steel, finished with robust hot-dip galvanization, and rated to 15 kN per clamp. They ensure fast, secure, and repeatable connections in both H-frame and Cuplock scaffolding systems.
What Is a Scaffolding Beam Clamp?
A scaffolding beam clamp is a two-piece coupler designed to grip steel beams or girders without drilling or welding. The clamp’s adjustable jaws accommodate flange thicknesses from 8 mm to 50 mm, allowing scaffold tubes (48.3 mm OD) to be affixed directly to existing structures. This tool-free installation method preserves structural integrity and accelerates scaffold erection and dismantling.
Key Advantages:
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No Welding or Drilling: Protects beam integrity and coating.
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Rapid Installation: Wrench-tightened bolts secure clamps in under 30 seconds.
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High Load Capacity: Each clamp is load-tested to 15 kN with a 1.5× safety factor.
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Universal Compatibility: Fits most I and H-section steel members and standard 48.3 mm scaffold tubes.
Attribute | Details |
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Material | Drop-forged mild steel (IS 2062 Grade A) |
Finish | Hot-dip galvanized per ASTM A153 (≥ 85 µm zinc) |
Load Rating | 15 kN per clamp (tested to BS EN 74 standards) |
Flange Capacity | 8 mm – 50 mm thickness (adjustable) |
Tube Compatibility | Ø 48.3 mm MS scaffold tubes |
Weight per Clamp | 1.2 - 1.4 kg for 48.3 mm dia pipe |
Bolt/Nut Specification | Grade 8.8 high-tensile bolts; hand-tighten then 25 Nm torque |
Compliance | IS 2750, BS EN 74, ISO 9001:2015 |
Technical Specifications
Components & Variants
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Fixed-Jaw Beam Clamp
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Single fixed jaw and one adjustable jaw. Ideal for uniform flange thickness.
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Swivel Beam Clamp
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Adjustable jaw pivots ±15° for sloping beams or eccentric connections.
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Heavy-Duty Girder Clamp
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Wider jaw capacity (up to 75 mm) for thick structural steel; reinforced gussets on jaws.
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Spigot-Joint Beam Clamp
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Incorporates a spigot pin for seamless vertical coupler extension into a tube-and-pin system.
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Applications & Use Cases
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Edge Protection & Guardrails
Attach horizontal guardrail tubes directly to building beams for temporary edge safety systems.
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Staircase & Access Ramp Supports
Secure stair stringers and handrails to structural flanges without disrupting underlying steelwork.
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Service Support Racks
Mount pipe racks, cable trays, and duct supports to overhead girders using beam clamps as the primary fixing.
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Event & Stage Rigging
Clamp scaffold tubes to overhead steel trusses for lighting grids, speaker arrays, and banner mounts.
Installation & Best Practices
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Pre-Installation Check
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Ensure flange surfaces are clean of paint drips, rust, or debris to achieve full contact.
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Positioning
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Place fixed jaw against one side of the beam flange, adjust the opposing jaw to the flange thickness.
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Tightening
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Hand-tighten the high-tensile bolt until snug, then apply a calibrated torque wrench to 25 Nm to secure.
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Avoid over-torqueing which can deform the beam clamp body.
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Tube Insertion
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Insert scaffold tube into the clamp socket and fasten with the integrated coupling bolt to 25 Nm.
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Inspection
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Verify clamp stability by applying a lateral force of 1 kN; ensure no slippage occurs.
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Maintenance & Lifecycle
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Routine Inspection: Before each use, check for corrosion under the jaws and ensure bolts operate smoothly.
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Cleaning: Wipe down clamps after exposure to concrete or corrosive environments; apply light machine oil to threads.
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Re-Galvanization: For extensively used clamps, consider periodic re-coating every 500 cycles to maintain corrosion resistance.
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End-of-Life Recycling: All MS components are 100 % recyclable, supporting Avanza Steel’s sustainability pledge.
Secure your next scaffold-to-structure connection with Avanza Steel’s reliable beam clamps:
👉 Download the full Product Brochure for detailed part codes, dimensional drawings, and load charts.
👉 Contact our team at avanzasteel@gmail.com or +91 33 4000 7575 to request a site-specific quote, arrange a factory tour, or schedule an on-site technical consultation.