Our main raw material-tube blank is provided by special steel enterprises like shanghai No.5 steel plant, Huzhou jiuli Group and Zhejiang Qingshan Special steel Co., Ltd, including 304,304L,304H,321,316,316L,310S,347H stainless steel. We can supply pipes with&＃65288;6.0MM&＃65293;426MM&＃65289;OD?#65288;1.0MM&＃65293;35MM&＃65289;WT?#65288;4000&＃65293;13000MM&＃65289;LONG. We also can provide pipes with special specification. The executed standards: GB/T14975-2002&＃12289;GB/T14976-2002&＃12289;GB13296&＃65293;91&＃12289;ASTM/ASME A213&＃12289;ASTM/ASME A312&＃12289;ASTM/ASME A269&＃12289;JISG3459&＃12289;JISG3463&＃12289;JISG3448&＃12289;DIN17458.We strictly carry out the international standard of ISO9001-2000. Our products are widely applied in the fields of food processing, petroleum, chemical, medicine, automobile, marine, construction, instruments, telecommunication and so on.