A335 GR P11 Alloy ANSI B16.25 steel Pipes Size: 1/2"-96" inspection: X-Ray test Certificate ... : API material: carbon SpecificationsChina StandardSteel GradeStandardseamless steel tubesGB/T8162-199910, 20, 35, 45, 40Mn2, 45Mn2, 27SiMn, ... 94Seamless steel tubesGB9948-8610, 20, 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo, JIS G3441-1988for petroleum cracking A335 GR P11 Alloy ANSI B16.25 steel ...