Long Weld Neck Flanges

Long Weld Neck Flanges are distinguished from other flanges by their long tapered hub and gentle transition of thickness in the region of the butt weld, joining them to the pipe. This type of long welding neck flange is preferred for application in the piping system which involves high pressure and elevated temperature. We specialize in manufacturing stainless steel long weld neck flanges in both alloy and non alloy materials based upon the application requirement of the clients.

Specifications:

• 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

• 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, 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 #