... upon the requirements of the clients.Stainless Steel : ASTM A 182, A 240Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, ... 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750 ... DIN2636, DIN2637, DIN2638, DIN2673B.S : BS4504 , BS4504, BS1560, BS10 Professional Stainless Steel Flanges Suppiler