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- Contact Person : Ms. Xing kelly
- Company Name : Luoyang Gongyan Technology Co., Ltd.
- Tel : 86-379-63501959
- Fax : 86-379-63501159
- Address : Henan,Luoyang,Room 1102,Aolin Building, Taikang Road, Wangcheng Avenue
- Country/Region : China
- Zip : 471023
tunneling rock bolts
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Tunneling rock bolt consists of anchor rod, anchor head, grouting stopper, arch plate and nut. The anchor rod is made of seamless steel tube with high strength. Hex nut and hemispherical nut are available which are all machined. You can also choose square plate or round plate.
Tunneling rock bolt has been widely used in tunneling, mining, slope stabilization and roof supporting of underground works, suitable for good or medium rock surroundings.
Product Specification:
specification | GY25 | GY28 | GY32 |
external diameter(mm) | 25 | 28 | 32 |
Breaking load(KN) | ≥150-180 | ≥180-220 | ≥220-250 |
Interior diameter(mm) | ≥15 | ≥17 | ≥22 |
drilling diameter(mm) | 42 | 42 | 51 |
thread type | left hand | ||
standard length(m) | 1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/6.0 | ||
length tolerance | ±2.5% | ||
Also available hot dip galvanized rods and accessories, special diameter can customize.
Plate dimension: 120*120*4mm,120*120*6mm,150*150*6mm,150*150*8mm.
tunneling rock bolts
