How much do you know about weld neck flange?

A weld neck flange consists of a circular fitting with a protruding rim around the circumference which is generally machined from a forging, these flanges are typically butt welded to a pipe. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. Such flanges are suitable for use in hostile environments that have extremes of temperature, pressure or other sources of stress.

ANSI ASME B16.5 class 1500 A350 LF2 weld neck flanges

Weld neck pipe flanges are typically provided with a raised face, flat face, or RTJ facing. When a raised face is necessary for weld neck pipe flanges, the standard height is 1/16 inch for weld neck pipe flanges fewer than 400#. For weld neck pipe flanges of 400# and up, the standard weld neck pipe flange raised face height is 1/4 inch.

Standard of weld neck flange:

ANSI B16.5, ANSI B16.47 SERIES A & B, DIN2630-2637, EN1092

Material of weld neck flange:

Carbon Steel:ASTM A 105/A105N

Stainless Steel:ASTM A182 F304/304L, F316/316L, F321

Alloy Steel:ASTM A182 F1, F5, F9, F11, F12, F22, F91

Size & Rating of weld neck flange:

1/2″-48″ ANSI CL150-CL2500, DIN 6BAR-40BAR, JIS 5K-30K

Face Type of weld neck flange:

Flat Face, Raised Face, Ring Joint Face, Lap Joint Face, Male Face, Female Face, Tongue & Groove Face

If you have any inquiry of weld neck flange, please do not hesitate to contact us.Email:sales@haihaogroup.com

ASTM A350 LF2 Weld Neck Flanges In Haihao Flange Factory