5 Types Of Flanges And Their Uses

The type of flanges to be used for a piping application depends, mainly, on the desired strength for the flanged joint. Flanges are used, or else to welded connections, to facilitate maintenance operations (a flanged joint is destroyed quickly and conveniently).Let’s currently dive in, showing the key forms of flanges with photos.

WELD NECK

Weld neck projection ASME B16.5 and B16.47 . Weld Neck projection attachment. A fastening neck projection (“WN”)features an extended tapered hub which will be welded with a pipe.

This projection sort is employed, normally, in aggressive Associate in Nursing high/low temperatures applications that need an unrestricted flow of the fluid sent by the piping system (the bore of the flanges matches with the bore of the pipe).

The absence of pressure drops prevents negative effects as turbulence and erosion/corrosion of the metals within the proximity of the flanged joints.

The tapered hub permits a swish distribution of the mechanical stress between the pipe and also the weld neck projection and facilitates the execution of picture taking inspections to sight doable leakages and fastening defects. Quality Forge & Fittings are Leading Carbon Steel Flanges Manufacturers in Indore.

The dimension of the projection (NPS and also the pipe schedule) shall match the dimension of the connecting pipe.

A fastening neck projection is connected to a pipe by one full penetration formed butt weld. The dimension and weights of ASME weld neck flanges are shown during this article.

Long weld neck

Long weld neck flanges (“LWN”) are the same as weld neck flanges, with the exception that the neck (tapered hub) is extended and acts sort of a boring extension.

Long weld neck flanges are usually used on vessels, columns or barrels. These projection varieties are obtainable additionally within the serious barrel (HB) and equal barrel (E) varieties.

SLIP ON

Slip on projection ASME B16.5 put on flanges, fillet welds

A wear projection is connected to the pipe or the fittings by 2 fillet welds, one dead within and one outside the cavity of the projection.

The bore size of a wear projection is larger than the surface diameter of the connecting pipe, because the pipe needs to slide within the projection to be connected by the execution of a fillet weld. Quality Forge & Fittings are Leading Carbon Steel Flanges Manufacturers in Indore.

Slip-on flanges outlined “Hubb Flanges” and that they are simple to acknowledge because of their slim and compact form.

The dimensions and weights of wear flanges ANSI/ASME are obtainable on this page. read more about slip-on flange.

THREADED

Threaded flanges are joined to pipes by carnal knowledge the pipe (which features a male thread, typically NPT per ASME B1.20.1) onto the projection, while not seam welds (in sure cases, though, little welds are applied to extend the strength of the connection).

Threaded flanges are obtainable in sizes up to four inches and multiple pressure ratings, however, they're used, mostly, little size piping in low and low-temperature applications, like water and air utility services.

Threaded flanges also are a compulsory demand in explosive areas, like gas stations and plants, because the execution of welded connections in such environments would be dangerous.

SOCKET WELD

Socket weld projection ASME B16 5 Socket Weld projection, one fillet weld

Socket weld projections are connected to pipes employing a single fillet weld dead on the outer aspect of the projection (different from the wear flange sort that needs 2 welds).

Quality Forge & Fittings are Leading Carbon Steel Flanges Manufacturers in Indore. According to ASME B31.1, to execute a projection association employing a socket weld flange, the pipe shall be initially inserted within the socket of the projection till it reaches rock bottom of the projection, then it ought to be raised by one.6 metric linear unit and eventually welded.

This gap shall be left to permit correct positioning of the pipe within the projection socket when the activity of the weld.

Socket Weld Flanges are used for small-size and aggressive piping that don't transfer extremely corrosive fluids.

This because of the very fact that these projection varieties are subject to corrosion within the gap space between the tip of the pipe and also the shoulder of the socket.

Their static strength of socket weld flanges is comparable to wear flanges’, however their fatigue strength is higher because of the presence of one, rather than double, fillet weld. Quality Forge & Fittings are Leading Carbon Steel Flanges Manufacturers in Indore.