Debonded Spring Bolt
- -The main body of the Debonded Spring Bolt is a full thread bar bolt, with the top end coiled into a spring shape using steel wire.
- -The spring-shaped steel wire can thoroughly mix the resin.
- -Installation is quick and convenient, providing stable support for the rock strata.
- -A plastic sheath can be fitted over the middle section to provide dynamic capabilities to the spring bolt.
Debonded Spring Bolt Functions:
Debonded Spring Bolt used with a face plate, domed ball,anti-friction washer, and nut.
A full-thread bar bolt can be an effective rock reinforcement system for ground support.
Debonded Spring Bolt Features&Advantages:
Offered with either left-hand or right-hand threading.
Enhanced thread ribs ensure better resin mixing and strengthened anchorage.
Compatible with both resin cartridges and cement grout.
Maintains consistent strength throughout its length.
The continuous thread allows for nut fastening at any point along the length, improving material utilization and reducing costs.
Available in either a black or hot-dip galvanized finish.
Debonded Spring Bolt Mechanical Properties
| ITEMNO | DIA | MASS | YIELD STRENGTH≥335MPa | YIELD STRENGTH≥500MPa | YIELD STRENGTH≥890MPa | ||||||
| (mm) | (kgs/m) | YIELD (kN) | TENSILE (kN) | ELONGATION | YIELD (kN) | TENSILE (kN) | ELONGATION | YIELD (kN) | TENSILE (kN) | ELONGATION | |
| 20 | 20 | 2.4 | ≥105 | ≥152 | ≥17% | ≥157 | ≥211 | ≥15% | ≥280 | ≥364 | ≥9% |
| 22 | 22 | 2.9 | ≥126 | ≥182 | ≥17% | ≥189 | ≥255 | ≥15% | ≥337 | ≥438 | ≥9% |
Debonded Spring Bolt Bearing plate:
Debonded Spring Bolt Accessories:
Domed nut, hex nut, anti-friction washer, domed ball
Debonded Spring Bolt Length & Package
Bolts are packaged in bundles.
Bolt fittings, such as nuts, anti-friction washers, and domed balls, are fitted to rock bolts in the requested configuration.
Debonded Spring Bolt Applications:
Mines
Tunnels
Slopes
Places that need ground support
