Long Neck Welding (abbreviated LWN) flanges are similar to a standard Welding Neck flange, but the "Neck" is considerably longer.
Specification :
Type: LWN Forged Flange, Long welding neck flange
Material: Carbon steel: A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22.8, Stainless Steel: F304 F304L F316 F316L 316Ti, Copper, High Nickel Alloys.
Standard: ANSI/DIN/JIS
Size: 1/2-78 inch (DN15-DN2000)
Pressure: ANSI class 150, 300, 600, 1500, 2500, DIN PN6,PN10,PN16,PN25,PN40,PN64,PN100,PN160
| Material of Construction | Standard | Grades |
| Stainless Steel Long Weld Neck Flanges | 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 |
| Material of Construction | Standard | Grades |
| Alloy Steel Long Weld Neck Flanges | ASTM A182 | F1,F5,F9,F11,F22,F91 |
| Material of Construction | Standard | Grades |
| Carbon Steel Long Weld Neck Flanges | ASTM A105 | Gr. F42,46,52,56,60,65,70 |
| Low Temperature Carbon Steel Long Weld Neck Flanges | ASTM A350 | LF2 , LF3 |
| Material of Construction | Standard | Grades |
| Inconel Long Weld Neck Flanges | ASTM SB564, SB160, SB472, SB162 | 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) |
| Material of Construction | Standard | Grades |
| Monel Long Weld Neck Flanges | ASTM SB564, SB160, SB472, SB162 | Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500) |
| Material of Construction | Standard | Grades |
| Duplex Long Weld Neck Flanges | ASTM A182, A240 | UNS F 44, F 45, F51, F 53, F 55, F 60, F 61 |
| Material of Construction | Standard | Grades |
| Hastelloy Long Weld Neck Flanges | ASTM SB564, SB160, SB472, SB162 | Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020) |
| Material of Construction | Standard | Grades |
| Nickel Alloy Long Weld Neck Flanges | ASTM SB564, SB160, SB472, SB162 | Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201) |
| Material of Construction | Standard | Grades |
| Copper Alloys Long Weld Neck Flanges | 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, |
| • | Stainless Steel 304 / 304L Long Weld Neck Flanges | • | Duplex Steel Long Weld Neck Flanges |
| • | SS 310 / 310S Long Weld Neck Flanges | • | Duplex Steel UNS S31803 Long Weld Neck Flanges |
| • | Stainless Steel 316 / 316L Long Weld Neck Flanges | • | Duplex Steel UNS S32205 Long Weld Neck Flanges |
| • | Stailess Steel 321 / 321H Long Weld Neck Flanges | • | Super Duplex UNS S32750 Long Weld Neck Flanges |
| • | SS 347 Long Weld Neck Flanges | • | Super Duplex UNS S32950 Long Weld Neck Flanges |
| • | Monel 400 Long Weld Neck Flanges | • | Hastelloy C276 Long Weld Neck Flanges |
| • | Cu-Ni 70/30 (C71500) Long Weld Neck Flanges | • | Cu-Ni 90/10 (C70600) Long Weld Neck Flanges |
| • | Central/South America | • | North America |
| • | Asia | • | Mid East/Africa |
| • | Eastern Europe | • | UAE |
| • | Sri Lanka | • | Bahrain |
| • | Russia | • | Egypt |
| • | Portugal | • | Turkey |
| • | Spain | • | Singapore |
| • | Brazil | • | Thailand |
| • | Chile | • | Malaysia |
| • | Venezuela | • | Indonesia |
| • | Costa Rica | • | Poland |
| • | USA, U.A.E | • | Italy |
| • | Oman | • | Canada |
| • | Saudi Arabia | • | Angola |
| • | Qatar |