SANYOU STAINLESS STEEL TUBE CO,.LIMITED mainly distribute precision stainless seamless tube , welded tube Material include: 304、304L、321、321H、316、316L、310S、 UNS31803（duplex），317L etc. Size range: ODФ2～Ф620mm, WT 0.3mm ～ 30mm. And manufacture as per customer’s special requirements. The main specifications are: GB/T14976-2002、GB13296-2007、 GB9948-2006、GB5310-95、ASTM A213、ASTM A312、ASTM A269、ASTM A789、ASTM A790 etc.Meanwhile, we can produce according to i