... pipe, the small the bore. Our range weld neck flanges, welding neck flanges are normally used for high-pressure, cold or ... , F22, F5, F9, F91Nickel Alloys : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276 Copper Alloys : Copper, Brass ... , DIN2673B.S : BS4504 , BS4504, BS1560, BS10 Stainless Steel Blind Flange,Slip on Flange,ANSI B16.5