welding wheel mainly used in Seam Welding Machine. material can be CuCrZr,CuCr,CuZr,CuBeNi,CuNi2SiCr has ISO9001 certificate welding wheel:1. mainly used in Seam Welding Machine2. material : CuCrZr(C18150),CuCr(C18200),CuZr(C15000),CuBeNi(C17510),CuNi2SiCr (C18000) welding wheel