... 300LB 600LB 900LB 4. Best Quality,competitive price. B16.5 A182 F11 alloy steel Lap Joint Flange This flange is counter ... : ASTM A 105, ASTM A 350Alloy Steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91Nickel Alloys : Monel 400 & 500 ... , DIN2637, DIN2638, DIN2673B.S : BS4504 , BS4504, BS1560, BS10 B16.5 A182 F92 alloy steel Lap Joint Flange