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| MINING |
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| TUNNELING |
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| CONSTRUCTION INDUSTRY |
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RESIN BOLTS
Type G resin bolts
Intended use
- Type G resin bolts are designed to be used for roof and ribs support in mine working areas and for tunnel lining as an independent or secondary support system.
Technical description
- Type G bolts are modern design bolts with a wide scope of regulation and load capacity exceeding 300 kN.
- Bolt rods are made from a reinforcing bar of dn=20, dn=25, dn=28 mm.
- The washers, in sizes 150 x 150 and 200 x 200 are made of 6, 8 and 10 mm plate.
| Bolt type |
Steel grade |
Re min (MPa)
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Rm min (MPa)
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A5 min %
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Bolt capacity (kN) |
| G20/20 |
BSt 500S |
500 |
550 |
16 |
180 |
| G25/24 |
250 |
| G28/27 |
330 |
Type G bolts have been tested and approved by Technische Universitat München.
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