Flange welding neck

FLANGE WELDING NECK FORGIATE. Busca Más Rápido y Mejor! A weld neck flange consists of a circular fitting with a protruding rim around the circumference.

The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. We have all types, sizes, specification and grades of.

Create access points in ultra-high-vacuum lines or chambers by bolting two same-size flanges together with a copper gasket between them.

The flanges’ sharp edges dig into the copper gasket and form an extremely tight seal, which means they handle higher vacuum pressures than other high-vacuum fittings with rubber gaskets. Le flange welding neck 300LB, con normativa di riferimento ASME B16. Generally machined from a forging, these flanges are typically butt welded to a pipe.

Designate 3libbre con riferimento alla pressione di esercizio, normalmente presentano bordo di appoggio per guarnizione (sigla raised-face RF). Welding neck flanges are normally used in severe service applications involving high pressures, high temperatures, large external loads or cryogenic conditions. There are two designs.

The regular type is used with pipes. The long type is unsuitable for pipes and is used in process plant.

If lap joint flanges are the flanges called for by the line class then you may only use lap joint flanges.

For other line classes you would normally use only weld neck flanges for all flange situations for 3” (NPS) and larger. The use of a slip-on flange could be an exception here only when there is a space limitation problem.

Compared with other types, weld neck flanges are know for their tapered hub and gentle transition from flange thickness to pipe wall thickness. They are deformation-resistant, and are normally used for high pressure piping system, high or low temperature.

The long welding neck flange is mainly applied to the construction of pressure vessel functioning as a nozzle (such as a thermowell nozzle). To attach a common welding neck flange to a pressure vessel, a piece of pipe is required with additional welding.

Notes - Dimension B corresponds to the pipe inside diameter. Weights are based on manufacturer’s data and are approximate. Flat face flanges may be provided at full thickness, C, or with raised face removed (the latter is nonstandard).

The tapered neck is also known as “nozzle neck”, or more commonly as “high hub”. Although expensive, the welding neck flange is the best designed butt weld flange available since the long tapered hub provides superior strength and resistance to dishing.

The butt welding of a weld neck flange to adjoining pipe. China welding neck flange - find detail stainless steel orifice flange from dingxiang huangxiang machinery fabrication co.

Pipes with ANSI B16. It helps in reducing the stress concentration from the bottom of the center. Flange welding neck B 16.

Long Neck Welding (abbreviated LWN) flanges are similar to a standard Welding Neck flange, but the “ Neck ” is considerably longer. This type is often used as a nozzle for a barr. Made of black forged carbon steel, bar rated and supplied with 3.

Buy the forging flange, blind flange, carbon steel flange, plate flange, welding neck flange from Shandong Aiguo Forging Co. Top quality, great selection and expert advice are our characteristics.

You can rest assured to buy the products with our factory and we will offer you the best after-sale service and timely delivery. Weld neck flanges are drilled (machined) with the wall thickness of the flange having the same dimensions of the matching pipe. The lighter the pipe is, the larger the bore, conversely, the heavier the pipe, the small the bore. A3 A6F4 F4 F5 F6 F65.

It has a pressure class rating of 1and has bolt holes.