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-The Dia 28mm Water Swelling Friction Bolt made from pressed steel tubing.
-Dia 28mm Water Swelling Friction Bolt expands and unfolds in the rock hole through the pressure of water.
-The installation is convenient and fast and can provide uniform support for the rock strata.
-It is suitable for rock strata under various conditions.
Dia 28mm Water Swelling Friction Bolt Key Features
Installation is rapid and effortless
No resin or grout is necessary
Remains stable despite blasting vibrations and varying rock strengths
Boasts an extensive expansion range, ensuring even load distribution along the hole
Delivers immediate structural support
Two designs of Dia 28mm Water Swelling Friction Bolt
> Dia 28mm Water Swelling Friction Bolt
> New improved Bolt with non-return valve which limits "spring-back" giving increased pull-out resistance and keeps high strength expansion.
| Item Description | Tube Thickness(mm) | Inflated Bolt Dia (mm) | Drill Hole Dia (mm) | Minimum UTS (mm) | Elongation% | Mass/Meter |
| 27mm | 2 | 41 | 35-38 | 120 | 10 | 2kg/m |
| 27mm | 2 | 54 | 45-51 | 160 | 10 | 2.8kg/m |
| 37mm | 3 | 54 | 45-51 | 240 | 10 | 3.75kg/m |
> Dia 28mm Water Swelling Friction Bolt Accessories
> Dia 28mm Water Swelling Friction Bolt Length
Length: 0.9m to 3.0m or as requested.
> Surface: Black / Plastic coated / Thermal Diffused or as requested.
