... .it features density and high streengt 1,Alloy Or Not:Non-alloy 2,Special Pipe :Thick Wall Pipe manufacture 3,Technique :Hot Rolled 4 ... ,Standard :JIS, GB, ASME, DIN 6,Grade :carbon steel pipe 7,Outer Diameter ;60.3mm~813mm 8,Thickness :20mm~100mm 9,Type :Seamless SEAMLESS STEEL PIPE