... a105n flanges1) Product Name:carbon steel a105n flanges2) Type of Flange: SLIP-ON, WELDING NECK, BLIND, SOCKET WELDING, THREADED, LAP JOINT3 ... ) Size of Flange: 1/2"-78" , DN15- DN2000 4) Material of Flange: Carbon Steel Flange: A105,SS400, SF440 RST37.2 ... ,S235JRG2,P250GH,C22.8 Stainless Steel Flange: F304 F304L F316 F316L 316Ti5) Surface Treatment: Anti-rust ...