... .9, GB/T12459 , MSS SP-43, DIN , JIS. 5) Material: Stainless steel (304/304L, 316/316L, 317L,321, 321H, 310S, 347H , DUPLEX2205 ... ,)6) Applications range: For use in the petroleum, smelting, foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat exchanger, and other ...