... used in petroleum,chemical industry,electric power,boiler, SpecificationsAPI, ISO: 9001:2000, CCS approved 1/2" to 72" ... SCH5S TO SCH160, XXS ASTM, JIS, DIN Standard The most competitive prices NameS304 STAINLESS STEEL SEAMLESS ... to 72’’PressureSCH 5S TO SCH 160,XXSConnectionButt WeldingStandardANSI, JIS, DIN, EN, ISO, GB, SH AND HGMaterialCarbon, Stainless and AlloyCertificateAPI, ISO9001 ...