... Diameter:6.0-273mm 3.Type:Seamless 4.Surface:2B,BA,HL,NO.1,8K,etc SpecificationsStainless ... .OD:6mm-50mm Thickness:0.3-3.0mm 3.Surface:Mirror,Satin/HL NameStainless Steel pipeStandardASTM A554, A249, A269 ... 5mmSurface180G, 320G, 400G Satin / Hairline400G, 500G, 600G or 800G Mirror finishApplicationDecoration construction, upholstery, industry instrumentTestSquash test, extended test, water pressure ...