Product Description Zhengde The hollow anchor consists of five parts: hollow drill pipe, plastic drill bit, grout stopper, backing plate, and nut. The drill bit is made of engineering plastic and is ...View More
Messages of visitorLeave a Message
No public comments yet
High Strength Full ASTM Precision Hollow Rock Bolts Threaded Steel Self Drilling Anchor Bolt Hollow Anchor/Hollow Anchor Bar Anchor Rods