1Type:butt welded and seamless pipe fitting 2.Size:DN15-DN1200 (1/2 ... HG/T21635, HG/T21631, MSS SP-43, DIN 2605 and JIS B2313 Material: stainless steel (304/304L, 316/316L ... , 317L,321, 321H, 310S, 347H, DUPLEX2205, S31803 and 904L) Applications: used in petroleum, smelting, foodstuff, power, ... , chemicals, medical equipment, aviation, boiler heat exchanger and other fields Certification:API,ISO