... Steel Seamless/Welded Pipe Material Grade: 304, 304L, 316, 316L, 321, 317, 317L, etc. Outside Diameter: ... 316L, 310S, 317, 317L, 347H, 2205Duplex Steel and as requestProcess techniqueCold rolled/cold drawn, precision rollingPackingWoven ... in production and operation of Sainless steel seamless/welded pipe, pipe fittings and complete set of equipment, ... 316/316L/304L Stainless Steel Pipe-Seamless&Welded