We currently have stainless steel seamless pipes，welded pipes，fitting and flange.

How to using stainless steel drilling screw:Due to the essential difference between stainless steel and carbon steel, stainless steel has good extension, improper use is easy to lead to screw can not go into smoothly, the binding force is not strong.(1) confirm whether the mechanical properties of t

The socket head of the hexagon screw is round outside, the middle is concave hexagon.This structure has obvious advantages.The socket head of the hexagon screw is round outside, the middle is concave hexagon.This structure has obvious advantages.1. More load.It has six stress surface, compared to on