DIN flanges

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DIN Flanges production and processing of finished solution treatment must be enclosed , so that product performance is optimal.

Applications Of DIN Flanges

In many applications, engineers need to find a way to close off a chamber or cylinder in a very secure fashion, usually because the substance inside must differ from the substance outside in composition or pressure.

  • DIN Flanges used in Chemical and petrochemical processing
  • DIN Flanges used in electronics
  • DIN Flanges used in processing equipment for maintaining product purity in handling foods, synthetic fibers
  • DIN Flanges used in marine and offshore engineering

Characteristics of DIN Flanges

DIN Flanges production and processing of finished solution treatment must be enclosed , so that product performance is optimal.

  • DIN Flanges is highly resistant to various reducing chemicals
  • DIN Flanges is excellent resistance to caustic alkalies
  • DIN Flanges is high electrical conductivity
  • DIN Flanges is excellent corrosion resistance to distilled and natural waters
  • DIN Flanges is resistance to neutral and alkaline salt solutions
  • DIN Flanges is excellent resistance to dry fluorine
  • DIN Flanges is widely used to handle caustic soda
  • DIN Flanges is good thermal, electrical and magnetostrictive properties
  • DIN Flanges is offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations

Dimensions of DIN Flanges

Flange Nominal DiameterPressure Rating (PN) 
**Nominal BSP Pipe SizePN6PN10PN16PN25PN40 
DN 107590909090O.D.
3/8"5060606060PCD (bolt circle)
 4 x 114 x 144 x 144 x 144 x 14# of holes x diam. of holes
DN 158095959595O.D.
1/2"5565656565PCD (bolt circle)
 4 x 114 x 144 x 144 x 144 x 14# of holes x diam. of holes
DN 2090105105105105O.D.
3/4"6575757575PCD (bolt circle)
 4 x 114 x 144 x 144 x 144 x 14# of holes x diam. of holes
DN 25100115115115115O.D.
1"7585858585PCD (bolt circle)
 4 x 114 x 144 x 144 x 144 x 14# of holes x diam. of holes
DN 32120140140140140O.D.
1 1/4"90100100100100PCD (bolt circle)
 4 x 144 x 184 x 184 x 184 x 18# of holes x diam. of holes
DN 40130150150150150O.D.
1 1/2"100110110110110PCD (bolt circle)
 4 x 144 x 184 x 184 x 184 x 18# of holes x diam. of holes
DN 50140165165165165O.D.
2"110125125125125PCD (bolt circle)
 4 x 144 x 184 x 184 x 184 x 18# of holes x diam. of holes
DN 65160185185185185O.D.
2 1/2"130145145145145PCD (bolt circle)
 4 x 144 x 184 x 188 x 188 x 18# of holes x diam. of holes
DN 80190200200200200O.D.
3"150160160160160PCD (bolt circle)
 4 x 188 x 188 x 188 x 188 x 18# of holes x diam. of holes
DN 100210220220235235O.D.
4"170180180190190PCD (bolt circle)
 4 x 188 x 188 x 188 x 228 x 22# of holes x diam. of holes
DN 125240250250270270O.D.
5"200210210220220PCD (bolt circle)
 8 x 188 x 188 x 188 x 268 x 26# of holes x diam. of holes
DN 150265285285300300O.D.
6"225240240250250PCD (bolt circle)
 8 x 188 x 228 x 228 x 268 x 26# of holes x diam. of holes
DN 175 315315330350O.D.
7" 270270280295PCD (bolt circle)
  8 x 228 x 2212 x 2612 x 30# of holes x diam. of holes
DN 200320340340360375O.D.
8"280295295310320PCD (bolt circle)
 8 x 188 x 2212 x 2212 x 2612 x 30# of holes x diam. of holes
DN 250375395405425450O.D.
10"335350355370385PCD (bolt circle)
 12 x 1812 x 2212 x 2612 x 3012 x 33# of holes x diam. of holes
DN 300440445460485515O.D.
12"395400410430450PCD (bolt circle)
 12 x 2212 x 2212 x 2616 x 3016 x 33# of holes x diam. of holes
DN 350490505520555580O.D.
14"445460470490510PCD (bolt circle)
 12 x 2216 x 2216 x 2616 x 3316 x 36# of holes x diam. of holes
DN 400540565580620660O.D.
16"495515525550585PCD (bolt circle)
 16 x 2216 x 2616 x 3016 x 3616 x 39# of holes x diam. of holes
DN 500645670715730755O.D.
20"600620650660670PCD (bolt circle)
 20 x 2220 x 2620 x 3320 x 3620 x 42# of holes x diam. of holes
DN 600755780840845 O.D.
24"705725770770 PCD (bolt circle)
 20 x 2420 x 2720 x 3320 x 36 # of holes x diam. of holes

Rigid inspection procedure assures the maintenance of high standards of accuracy in regular day to day production.

DIN Flanges Norms

All the Raw Materials received by our company are subject to chemical and physical test and weighed immediately on receipt only thereafter they are taken in the stock.

The Welding neck flanges is normally referred to as the high hub flange.

Welding Neck Flanges

A weld neck flange (also known as a high-hub flange and tapered hub flange) is a type of flange.

Threaded Flanges

Threaded flanges are widely demanded as pipe flanges i.e called as threaded pipe flanges used in different industrial applications.

Slip-on flange

Slip-On flanges or SO flanges are commonly lower in price than weld-neck flanges, and to this effect are a popular choice for our customers.

Blind Flanges

The blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes.

Flange facing types according to DIN EN 1092-1

Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges

This European standard specifies requirements for circular steel flanges in PN designations PN 2,5 to PN 400 and nominal sizes from DN 10 to DN 4000. This standard specifies the flange types and their facings, dimensions, tolerances, threading, bolt sizes, flange face surface finish, marking, materials, pressure/ temperature ratings and flange masses.

Flange faces have to be smooth enough to ensure a tight, leak-free seal for bolted flanges.

Type A: flat face

Type B: raised face

Type C: tongue face

Type D: groove face

Type E: spigot

Type F: recess

Type G: O Ring recess

Type H: O Ring groove

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