Weld Neck Flanges

we are offering weld neck flanges. this flange is circumferentially welded into the system at its neck which means that the integrity of the butt welded area can be easily examined by radiography. the bores of both pipe and flange match, which reduces turbulence and erosion inside the pipeline. the weld neck is therefore favoured in critical applications. the various types of weld neck flanges are: - weld neck flat face flanges - raised face weld neck flanges ansi b 16.5 class 150 ansi b 16.5 class 300 ansi b 16.5 class 600 ansi b 16.5 class 900 ansi b 16.5 class 1500 ansi b 16.5 class 2500 stainless steel : astm a 182, a 240 grade : 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 carbon steel : astm a 105, astm a 181 alloy steel : astm a 182, gr f1, f11, f22, f5, f9, f91 nickel alloys : monel 400 & 500, inconel 600 & 625, incoloy 800, 825, hastelloy c22,c276 copper alloys : copper, brass & gunmetal size : 18" nb to 48"nb. class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.