shaped seamless steel pipes We possess ISO14001-2004&ISO9001-2000 certificationsProduct informations:1.Outside diameter:4-70mm,Thickness:0.5-12mm2.Meterial:carbon steel ,alloy steel .st35,st45.st55.20crmo,A106,35CRMO etc.3.Standrads:DIN1629.DIN1630.DIN2448.DIN2391,ASTM A179,ASTM A519,A106,ETC4.different shapes according to customers' requirements5.with good precision. shaped seamless steel pipe