self-drilling anchor bolt consists of anchor rod, steel drill bit with alloy head, anchor coupling(optional),arch plate, grouting stopper and hex nut. It has been widely used in tunneling, mining, slope stabilization, tunnel diseases treatment and roof supporting of underground works. It integrates functions drilling, grouting and anchoring at one time and is suitable for difficult grounds (clay, sand, friable…etc). Hollow anchor rod is made of seamless tube with high strength.
Specification
GYZ28 | GYZ32 | GYZ38 | GYZ51 | GYZ63 | GYZ76 | GYZ89 | GYZ103 | ||
Exterior | 25 | 32 | 32 | 38 | 51 | 63 | 76 | 89 | 103 |
Interior | 13 | 23 | 20 | 19 | 28 | 43 | 56 | 68 | 83 |
Breaking load | 200 | 240 | 280 | 530 | 838 | 1100 | 1380 | 1600 | 1980 |
Tensile yield point | 150 | 190 | 230 | 440 | 693 | 909 | 1140 | 1280 | 1636 |
Drill diameter | 42 | 51 | 51 | 76 | 90 | 90 | 102 | 115 | 140 |
Delivery length | 1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/6.0 | ||||||||
1) also available hot dip galvanized anchor bolts
2) left hand only unless otherwise noted
3) right hand bolts
4) kinds of drill bits are optional for different ground conditions.
