... /T21631, MSS SP-43, DIN 2605, JIS B2313 5) Material: Stainless steel (304, 304L, 316, 316L, 321, 321H, 310S, 347H) 6) Our ... use in the petroleum, smelting, foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat exchanger, and other fields.