Scaffold Sleeve Couplers are known by various names depending on region or industry terminology. Common alternative names include Tube Sleeve Coupler, Scaffolding Spigot Coupler, Tube-to-Tube Coupler, and Sleeve Joint Coupler. While these terms may vary, they generally refer to the same type of coupling device used to join scaffold tubes in a straight line.
Product Description
Scaffold Sleeve Couplers are known by various names depending on region or industry terminology. Common alternative names include Tube Sleeve Coupler, Scaffolding Spigot Coupler, Tube-to-Tube Coupler, and Sleeve Joint Coupler. While these terms may vary, they generally refer to the same type of coupling device used to join scaffold tubes in a straight line.
| Europe | EN 74, BS 1139 | Grade 8.8 forged steel, 48.3 mm tube diameter | Hot-dip or electro-galvanized | Strict safety and corrosion standards |
| United States | ASTM A123/A153, OSHA | Steel for 1.9 inch (~48.3 mm) diameter tubes | Hot-dip galvanization | Focus on workplace safety and durability |
| Japan | JIS | High-precision steel, approx. 48.6 mm tube diameter | Electroplating or powder coating | Emphasis on precision and finish |
| India | IS 2751 | Carbon steel or forged steel, 48.3 mm tube diameter | Hot-dip galvanization | Cost-sensitive market, certified quality |
Scaffold sleeve couplers comply with several internationally recognized standards, including EN 74 in Europe, BS 1139 in the UK, ASTM A123/A153 in the USA, JIS G3505 in Japan, and IS 2751 in India. These standards regulate mechanical strength, dimensions, material quality, surface treatment, and safety requirements to ensure reliable and safe scaffold assemblies.
| Parameter | Typical Value | Unit | Description |
|---|---|---|---|
| Tube Outer Diameter | 48.3 | mm | Standard scaffold tube diameter |
| Sleeve Length | 120 | mm | Length of the sleeve coupler |
| Bolt Diameter | M10 or M12 | mm | Diameter of tightening bolt |
| Material Tensile Strength | ≥ 800 | MPa | Minimum tensile strength of forged steel |
| Coating Thickness | 45–70 | microns | Typical hot-dip galvanized coating thickness |
| Working Load Limit | ~6 | kN | Load capacity per coupler (approximate) |
| Weight | 0.8–1.2 | kg | Average weight of one coupler |
1. Extending Scaffold Tubes for Custom Scaffold Height or Length
Scaffold sleeve couplers are primarily used to join two scaffold tubes end-to-end, allowing construction workers to extend the length or height of scaffolding structures. This is especially useful on sites where standard tube lengths do not meet the required dimensions, providing flexibility and adaptability to scaffold design.
2. Joining Scaffold Tubes in Tight or Restricted Spaces
In confined work areas or complex scaffolding layouts, sleeve couplers allow secure, straight-line connections between tubes where overlapping with traditional clamps is difficult. They enable seamless extension without compromising stability or load capacity.
3. Industrial Scaffolding and Construction Sites
These couplers are essential components in large-scale scaffolding setups used in building construction, maintenance, and repair. Their robust construction ensures safety and durability, even under heavy loads and frequent assembly/disassembly cycles.
4. Temporary Platforms and Support Structures
For temporary work platforms, event staging, or maintenance scaffolds, sleeve couplers help create stable, extended scaffold frameworks that can be quickly erected and dismantled. Their reliability ensures worker safety in diverse environments.
5. Bridge and Tunnel Scaffolding Systems
Infrastructure projects such as bridges and tunnels often require customized scaffolding solutions to fit irregular shapes and restricted areas. Sleeve couplers provide strong tube-to-tube connections, maintaining scaffold integrity under dynamic loads.
6. Shipbuilding and Offshore Platforms
In marine and offshore environments, corrosion-resistant sleeve couplers connect scaffolding tubes for ship repairs, inspections, or platform maintenance. Their galvanization and high tensile strength help withstand harsh conditions like saltwater exposure and heavy usage.
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