Flanges Definition

A pipe flange looks like a disc or collar to used for the flange joint in of a piping connection . It cound be used to attach pipes, fittings, valves, pumps and different equipment to shape a piping gadget. the two flanges are fastened by using bolts and nuts in a flange joint, this means that it is easy to disassemble for inspection or cleansing. Flange is commonly welded or threaded to attach the pipe in a piping system with a gasket for seal among flanges. Red Earth Steels institution installed the first flange manufacturing facility in Red Earth Province ,now we are a main flange manufacturer and supplier in China. touch us for extra statistics approximately metal flange products.

Types of flanges:

As according to the form and connection strategies of flanges, the flanges are divided into following types: Weld neck flange, Blind flange, Slip on flange, Socket weld flange, Threaded flange, Lap joint flange, Orifice flange, spectacle blind, lengthy weld neck flange, Flange-olet, decreasing flange, Rolled-Forging Ring Flanges, Anchor Flanges, Tube-sheet and so forth.

Followings are the definition, information and application of various kinds of flanges:

Socket Weld Flange Lap Joint FlangeOrifice Flange
Long Weld Neck FlangeRing Joint FlangeReducing Weld Neck Flange
Weld Neck FlangeLap Joint FlangeBlind Flange

Materials for Flanges:

The flanges can be fabricated from various materials , such metal , solid iron ,brass, Ni, Ti and different materials, Hebei Haihao flange manufacturing facility especially produce the steel materials flanges, like carbon metal ,stainless-steel ,alloy steel and duplex steel materials in forging condition.

As consistent with specific fashionable , the cloth may additionally have exclusive codes , the chemical composition and mechanical properties are distinctive. In ASTM, DIN, BS, EN , JIS ,AS , GB, GOST wellknown flanges , they all have their personal material request, whilst set up the production, the uncooked fabric must be showed first.

Dimensions of Flanges:

The dimensions of flanges includes many referenced data, flange thickness, OD, ID, PCD, bolt hole, hub height, hub thickness, sealing face. So it is necessary to confirm the flange dimensions before confirming a flange order . According to different application and standard, the dimensions are different . If the flanges will be used in a ASME standard piping system, the flanges usually are ASME B16.5 or B16.47 standard flanges, not EN 1092 standard flanges.

So if you place a order to a flange manufacturer , you should specify the Flange dimensions standard and material standard .

Connection of flange joint.

In a typical flange joint, there are two flanges, sealing gasket, bolts , nuts ,spacers. Every flange is welded or screwed to a pipe(the blind flange is used in the end of the piping system), then the two flanges are joint by the bolts. It can make sure the flange joints assembly easily.

Sealing of flange joint.

While the flanges are fastened with the aid of bolts, normally a gasket is laid between the 2 flanges, it is able to make certain the joint has an excellent sealing . In distinct utility , the gasket and sealing face of flanges are distinctive.

The maximum common flange sealing face is upward push face(RF) ,there are also flat face(FF), ring type joint (RTJ) and so on . The flange face have special finishings, consisting of: stock completing, Spiral serrated completing, concentric serrated completing, easy completing and many others.

The gaskets in a flange joint additionally have various type and fabric, the most commonplace used gasket is Spiral wound gasket, the material might be carbon steel, alloy steel, graphite and so forth, there are also gasket ring , that are used among RTJ face flanges for high strain utility.