... requirements..1.Standard: ASTM A312,ASTM A213,ASTM A269,ASTM A790... 2.Material: TP304,TP304L,TP316,TP316L,TP317,TP317L,309S,310S ... :cold drawing,precision rolling. ..DescriptionStainless Steel Pipes/TubesStandardASTM A312,ASTM A213,ASTM A269,ASTM A790...Certificate ISO9001Outside diameter6mm-720mm 1/4 ... Delivery timeAround 30days Manufacturer of 2205/2520/2507/S31803/904L Duplex stainless steel pipe