... Seamless steel pipe for general use: ASTM A 53 GR.B,Steel Grade: SA53B and speciation O.D:1/2"-28 ... Seamless steel pipe for high temperature:ASTM A 106 GR.B,Steel Grade: SA106B and speciation O.D:1/2"-28 ... ",21.34 -711.2mm W.T: SCH10S- SCH120;3.Seamless steel pipe DIN2448 ... SCH10S- SCH120;4.line Pipe: API SPEC 5LSteel Grade :A,B,X42,X46,X52 (PSL1)and speciation O.D: 2"-28 ...