Flange

A Flange is a method of connecting pipes, valves, pumps and other equipment to form a pipework system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed into such systems and then joined with bolts.


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Flanges - General Information

A Flange is a method of connecting pipes, valves, pumps and other equipment to form a pipework system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed into such systems and then joined with bolts.

Flange Types

Weld Neck

This flange is circumferentially welded into the system at its neck which means that the integrity of the butt welded area can be easily examined by radiography. The bores of both pipe and flange match,which reduces turbulence and erosion inside the pipeline. The weld neck is therefore favoured in critical applications

Slip-on

This flange is slipped over the pipe and then fillet welded.Slip-on flanges are easy to use in fabricated applications.

Blind

This flange is used to blank off pipelines,valves and pumps, it can also be used as an inspection cover. It is sometimes referred to as a blanking flange.

Socket Weld

This flange is counter bored to accept the pipe before being fillet welded.The bore of the pipeand flange are both thesame thereforegiving goodflow characteristics.

Threaded

This flange is referred to as either threaded or screwed. It is used to connect other threaded components in low pressure, non-critical applications. No welding is required.

Lap Joint

These flanges are always used with either a stub end which is butt welded to the pipe with the flange loose behind it. This means the stub end always makes the face. The lap joint is favoured in low pressure applications because it is easily assembled and aligned. To reduce cost these flanges can be supplied without a hub and/or in treated, coated carbon steel.

Ring Type Joint

This is a method of ensuring leak proof flange connection at high pressures. A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal. This jointing method can be employed on Weld Neck, Slip-on and Blind Flanges.

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Parameters:

Flange WeldingNeck,Slipon,Blind,Plate,ThreadedFlange,SocketWeldFlange
Standard ANSI ANSIB16.5,ASMEB16.47seriesA(MSS-SP-44),ASME
B16.47,seriesB(API605)
DIN DIN2630-DIN2637,DIN2576,2502,DIN2527,DIN86030
EN EN1092-1:2008
BS BS4504,BS10TableD/E
GOST GOST12820-80,GOST12821-80
UNI UNI2280-UNI2286,UNI2276-UNI2278,UNI6091-UNI6095
Material ANSI CSA105/A105NA350LF2ss304/304L,316/316L
DIN CSRST37.2,S235JR,P245GH,C22.8,SS304/304L,316/316L
EN CSRST37.2,5235JR,P245GH,C22.8,SS304/304L,316/316L
BS |CSRST37.2,5235JR.C22.8,ss304/304L,316/316L
GOST |CSCT20,16MN
UNI CSRST37.2,5235JR,C22.8,SS304/304L,316/316L
Pressure ANSI Class150,300,400,600,900,1500,2500lbs
DIN PN6,PN10,PN16,PN25,PN40,PN64,PN100
EN PN6,PN10,PN16,PN25,PN40,PN64,PN100
BS PN6,PN10,PN16,PN25,PN40,PN64,PN100
GOST PN6,PN10,PN16,PN25,PN40,PN63
UNI PN6,PN10,PN16,PN25,PN40,PN64,PN100
Size ANSI 1/2*-120"
DIN DN15-DN3000
EN DN15-DN3000
BS DN15-DN3000
GOST DN10-DN3000
UNI DN10-DN3000
Coating anti-rustoil,varnish,yellowpaint,blackpaint,galvanizingetc
Usage Usedfortheconnectionofallkindsofpipelinetoconveythewater,
steam,air,gasandoil
Package Plywoodcases/pallets

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