... API 4.Material:Carbon Steel,Alloy Steel,Stainless STD 10" SCH. 40 (42' pipe lengths) PIPE SpecificationsChina ... StandardSteel GradeStandardseamless steel tubesGB/T8162-199910, 20, 35, 45, 40Mn2, 45Mn2, 27SiMn, 20Cr, 40Cr, ... fertilizer equipmentASTM A161-94Seamless steel tubes for petroleumcrackingGB9948-8610, 20, 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo, JIS G3441-1988Big ...