stainless steel pipe: 1)expert in welded tube 2)ISO, PED 3)10years of export history 4)TISCO,ZPSS,YUSCO,BAOSTELL,OUTOKUMPU Surface180G, 320G, 400G Satin / Hairline400G, 500G, 600G or 800G Mirror finishApplicationDecoration construction, upholstery, industry instrumentTestSquash test, extended test, water pressure test, crystal rot test, heat treatment, NDT Chemical Composition of Material ...