We are one of leading professionally manufacturer of carbon steel pipe in China. We have much superiority in following products. Carbon Steel Pipe: 1.Seamless steel pipe for general use: ASTM A 53 GR.B, Steel Grade: SA53B and specication O.D:1/2"-28",21.34 -711.2mm W.T: SCH10S- SCH120 2.Seamless steel pipe for high temperature:ASTM A 106 GR.B, Steel Grade: SA106B and specication O.D:1/2"-28",21.34 -711.2mm W.T: SCH10S- SCH120; 3.Seamless steel pipe DIN2448/1629,DIN17175, German standard, Steel Grade: st37,st42,st52,st35.8-st45.8/1, specication O.D: 1/2"-28",21.34-711.2mm W.T: SCH10S- SCH120; 4.line Pipe: API SPEC 5L Steel Grade :A,B,X42,X46,X52 (PSL1)and specication O.D: 2"-28",60.3-711.2mm W.T: SCH10S- SCH120; 5.Casing Pipe: API SPEC 5CT Steel Grade:J.K.N.L.P(PSL1) Threads:STC ,LC, BC and specication: 5"-13-3/8",127-339.7mm, ERW steel pipe, hot-dipped galvanized steel pipe, SSAW steel pipe, oil casing pipe, squarerectangular steel pipe, and plastic inner-lined galvanized steel pipe