Seamless steel pipe 1) ASTM A53 ASTM A106 API5L,gradeB,X42, 10#,20#,45# 2) Specification: ST37,ST44, 3) Size:1/2’’-24’’ 4) Thickness: SCH5,SCH10, SCH20, SCH40,SCH80,SCH160 5) Other specification available according to customer’s requirement 6) Packing: International standard packing 7) Seamless steel pipe, welded steel pipe, galvanized steel pipe, anticorrosion steel pipe Please feel free to contact with us if you have need on steel pipe, we are looking forward to cooperate with you in the near future.