We are one of the leading trader and supplier of Long Weld Neck Flanges. Material of Construction Standards Grades Stainless Steel ASTM A182 , A240 F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L Carbon Steel ASTM A105 ASTM A 105/ A694 F42 / 46 / 52 / 56 / 60 / 65 / 70 / A350 LF3 / A350 LF2 / A350 LF1 Alloy Steel ASTM A182 F1, F5, F9, F11, F22, F91 Nickel Alloy ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, Copper Alloy Low Temperature Carbon Steel ASTM A350 LF2 , LF3 Duplex Steel ASTM A182, A240 UNS F 44, F 45, F51, F 53, F 55, F 60, F 61