... We specialized in elbow, tee, reducer,cap and other pipe fittings, and we can satisfy with your demands on good ... GB/T12459 , MSS SP-43, DIN , JIS. 5) Material: Stainless steel (304/304L, 316/316L, 317L,321, 321H, 310S, 347H , DUPLEX2205 ... petroleum, smelting, foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat exchanger, and other fields. 7). Inspection: factory in-house ...