Yanggu Yihui Drilling Tools Co.,Ltd.
ADDRESS:No.216 Zhengyang Road, Qingdao, Shandong,China.
1) spherical nut: the stress concentration of surrounding rock can be transferred to the backing plate.
2) arch pad: it can bear greater stress of surrounding rock.
3) stop stopper: make grouting maintain certain pressure to fully fill the surrounding rock void.
4) Bolt body: full-length international standard waveform connecting thread, easy to install drill bit, connecting sleeve, fastening nut; and can be arbitrarily cut and connected to lengthen.
5) coupling sleeve: make the anchor bolt extend to the depth of the design while drilling.
6) drill bit: it has strong penetrability, so that bolts can pass through all kinds of rocks.