Long Weld Neck Flange

DESCRIPTION:  Hebei Metals supplies Long Weld Neck Flanges.  Long weld neck flanges, also called LWN flange, are similar to standard   weld neck flanges but the neck is considerably longer. This type is often   used as a nozzle for a barrel or column. They can be futher sorted as  standard type, heavy barrel type, variable body type and full body type.

Specification for Long Weld Neck Flanges:

1. International Standards:

    ASEM B16.5, ASME B16.47 Series A(MSS SP44), ASME B16.47 Series B(API 605)

    BS4504, BS3293, BS1560, DIN2627, DIN2628, DIN2629, DIN2633, DIN2634, DIN2635, DIN2636

2. Material Specification:

    ASTM A105, A181, A350, A516, A694, A36; EN DIN C22,8, ST37.2

    ASTM A182 F304(L), F316(L), F310, F317, F321, F347, F904L

    Aluminum 3003, 6061; Hastalloy B-2, C-276, G, X, C-22;

    Inconel 600, 601, 625, 718; Incolloy 800, 825, 800H, 800HT;

    Monel 400; Copper C70600, C71500; Duplex F51, F53; Titanium Gr.2 Gr.12

3. Pressure Ratings:

    Class 150 ~ Class 2500; PN16 ~ PN400

4. Size Range:

    1/2" ~ 72" (DN15 ~ DN1800)