Three section water stop screw

The vertebral body type water stop screw can be roughly divided into three parts: two outer rods and one inner rod. It has simple structure and convenient use. And the outer rod can be recycled after disassembly. In the later construction, only the middle section of the screw needs to be purchased, which has the advantages of reducing waste and reducing material cost; And improve work efficiency and concrete construction quality. The middle part of the inner rod is welded with a water stop ring, and the two ends are threaded. The length of the inner rod is determined according to the thickness of the thin-walled concrete structure. In the process of formwork removal, first remove the outer rod of the screw, and then remove the formwork. The formwork has zero loss and saves money and labor