Conforming to the following standards：GB/T13296、GB/T14976、GB/T14975、GB9948、GB5310、ASTMA213、ASTMA312、ASTM A269、ASTMA511、ASTM A789、ASTM A790、GOST 9941、GOST 9940、JISG3459、JIS3463、DIN17456、DIN17458,etc., our steel grades include 304 、304L、304H、304N、316L、316Lmod 、316Ti、317L、310S、321、321H、347H、S31803、S32750、347、330、904L、GH800、GH3030、NI99.9、314、NS312、Monel400 with outside diameter from 6 to 630mm and wall thickness from 1 to 40mm. Moreover, for customers’ selection, products of various standards can be made to meet customers’ requirements. Those standards can include GB, ASTM, AISI, CNS, JIS, KS, IS, UNS,CSA, DGN,AS, BS, DIN, NF, etc.High precision production,strict production process,high quality products,we can produce seamless pipes for nuclear power station or under each countries' classification society requirement.