carbon steel pipe 1) API 5L ,ASTM A106,ASTM A53 2)The lowest price in China in 100% 3)Please just ... :-, Cold drawn precision steel pipe production line from size 1/4"-5" OD pipe.-, Hot rolled from size 6"-16" OD ... : OD: 20mm~1067mm, Thickness: 1.0~25.0mm, Length: ≤13m 2) Material: Q195, Q215, Q235, Q345, STK500 ,GR.B,X42,X46 ...