EX Bolt
- -The EX Bolt is a friction bolt made from pressed steel tubing.
- -EX 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.
EX Bolt Introduction
The EX Bolt is an expandable rock bolt with elongation properties designed to accommodate ground movement. The bolt is a folded steel tube with welded bushings on each end.
The bolt is simply inserted into the drilled hole and inflated using high pressure water making it safe and easy to install.
The bolt tube is inflated to the exact shape of the drilled hole and can tolerate a large variation in hole diameter.
EX 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 EX Bolt
> EX 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 |
> EX Bolt Accessories
> EX Bolt Length
Length: 0.9m to 3.0m or as requested.
> Surface: Black / Plastic coated / Thermal Diffused or as requested.
