self drilling bolt 自钻式锚杆
self-drilling bolt 自进式中空锚杆
self - drilling bolt 自钻式锚杆
self-drilling anchor bolt 自钻式锚杆
bolt hole drilling 锚杆钻孔
Winch base plate ready for cleaning and drilling bolt holes.
绞车底板准备清洁和钻井螺栓孔。
Single pass drilling apparatus, use a one-piece drill bit, method and rock bolt for single pass rock bolting.
单通道钻孔装置，整个钻头的使用，用于单通道岩石锚固的方法和岩石锚栓。
Our products are: "Ji Da "brand hexagon bolt, 10.9 steel bolts, anchor bolts, weld screws, drilling screws, rivet, bolt.
公司生产的产品有：“冀达”牌六角螺栓、10.9级钢结构螺栓、地脚螺栓、焊钉、钻尾钉、拉铆钉、膨胀螺栓。
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