1-Stainless steel pipe and alloy pipe(304,316,317,347H,904L,309S,310S,2205,2507) 2- ... ,TP317L,309S,310S,TP321,347H,2205,2507,904... 3. Application: petroleum,chemical industry,electric power,boiler,high temperature resistance... 4. Productions ... Manufacturer of 2205/2520/2507/S31803/904L Duplex stainless steel pipe