... 1.Seamless steel pipe for general use: ASTM A 53 GR.B,Steel Grade: SA53B and speciation O.D:1/ ... SCH1202.Seamless steel pipe for high temperature:ASTM A 106 GR.B,Steel Grade: SA106B and speciation O.D:1/2"- ... Seamless steel pipe DIN2448/1629,DIN17175, German standard,Steel Grade: st37,st42,st52,st35.8-st45.8/1, ... : SCH10S- SCH120;4.line Pipe: API SPEC 5LSteel Grade :A,B,X42,X46,X52 (PSL1)and speciation O ...