Yanggu Yihui Drilling Tools Co.,Ltd.
ADDRESS:No.216 Zhengyang Road, Qingdao, Shandong,China.
Self-drilling bolt uses good thick-walled seamless steel pipe material, perfect and fast surface thread forming technology and well-made accessories, which truly realizes the unity of self-drilling bolt drilling, grouting, anchoring and other functions.
1) There is a drill with strong penetrating force in front of the bolt. Under the action of general rock drilling machine, it can easily penetrate all kinds of rocks.
2) The bolt has continuous international standard waveform threads, which can be used as drill pipe and drill bit to complete drilling into anchor holes.
3) The bolt body used as drill pipe does not need to be pulled out, and hollow can be used as grouting passage to grout from inside to outside.