Long Weld Neck Flange

We offer long weld neck flanges in alloy and non-alloy materials. These alloy long weld neck flanges are offered in various diameters and sizes. Long weld neck flanges are machined with the wall thickness of the flange having the same dimensions of the matching pipe. 
The lighter is the pipe, the larger will be the bore and vice versa. These flanges are equally suitable for high-pressure, cold or hot temperature applications. 
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, Incolloy 800, 825, Hastelloy C22,C276
Copper Alloys : Copper, Brass & Gunmetal 
Size : 1/8" NB TO 48"NB.
Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #. 
Standard
ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN :DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S : BS4504 , BS4504, BS1560, BS10