Self-Drilling Anchor bolt (SDA) are full threaded hollow rock bolts which used in the drill string during drilling of a support hole, and grouted into the hole.
Our products can not only be sold individually, but also as a whole set. Taking into account the family situation of people now, a set of kitchen supplies is definitely better than a piece.
Self drilling anchor system is comprised of a hollow threaded anchor bar with a sacrificial drill bit that performs drilling, anchoring and grouting in a single operation.
100t Double Girder Gantry Crane with Factory PriceGantry Crane with Sheild(DMG) is mainly used for installation of cutter and shield machine, w...