3*1000mm S221 most used Chna factory direct sale TIG copper welding rods

Description: S221 is a special brass wire with a small amount of tin and silicon. Tin can improve the fluidity of the welding wire, and silicon can effectively control the evaporation of zinc, eliminate pores, and obtain a good weld. Uses: It is suitable for brass and copper gas welding as filler material, and is also widely used for brazing steel and cast iron and inlaid carbide tools. It can also be used as a surfacing material for low-pressure valve sealing surfaces and light-duty wear-resistant surfaces.