... products passed though the certificate of ISO9001:2008, an got the ... -alloy 2,Special Pipe :Thick Wall Pipe manufacture 3,Technique :Hot Rolled 4,Place of Origin :Hebei, ... China (Mainland) 5,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