Long Weld Neck Flanges

Long Weld Neck Flanges

Long Weldnecks Flanges (LWNRF) are in shape same as slip on flange with a piece of pipe already attached but are formed and machined in a one-piece construction. They are often used in vessel manufacturing.

Long weldnecks are unique due to their simple connectivity with other pipes. Long weldneck almost identical to weldnecks, but for two differences: they do not have a bore, and the total height (length) of the flange from 9” through 18” long. with facing of raised, flat or RTJ Joints.

Our long weldnecks flanges are available in 150 to 2500 pound class in all of our stainless steel grades. We can also manufacture many of your other design requirements by user.

Long Weld Neck Flanges Range
½” (15 NB) to 48″ (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. Available with NACE MR 01-75

Stainless Steel Long Weld Neck Flanges
Grade: 304, 304L, 304H, 309, 310, 310S, 316, 316Ti, 316 L, 317, 317L, 321, 347, 347 H, 409, 410, 410S, 420, 430L

Duplex Steel Long Weld Neck Flanges
Grade: 2205 (UNS No. S31803), 2507 (UNS No. S32750)

Nickel Alloy Long Weld Neck Flanges
Grade: 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), Titanium (Grade I & II)

Copper Alloy Long Weld Neck Flanges
Grade: UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu -Ni- 70/30)

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