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What is a Flange?

ANSI flange

DIN flanges

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

Dimensions of DIN Flanges

At Sunny Steel Factory owned pneumatic marking machine, all flanges are available to customers free typing products, customers can be requested marked material, pressure , caliber, production standards or customer to provide own special text.

Flange Nominal Diameter Pressure Rating (PN)  
**Nominal BSP Pipe Size PN6 PN10 PN16 PN25 PN40  
DN 10 75 90 90 90 90 O.D.
3/8" 50 60 60 60 60 PCD (bolt circle)
  4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam. of holes
DN 15 80 95 95 95 95 O.D.
1/2" 55 65 65 65 65 PCD (bolt circle)
  4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam. of holes
DN 20 90 105 105 105 105 O.D.
3/4" 65 75 75 75 75 PCD (bolt circle)
  4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam. of holes
DN 25 100 115 115 115 115 O.D.
1" 75 85 85 85 85 PCD (bolt circle)
  4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam. of holes
DN 32 120 140 140 140 140 O.D.
1 1/4" 90 100 100 100 100 PCD (bolt circle)
  4 x 14 4 x 18 4 x 18 4 x 18 4 x 18 # of holes x diam. of holes
DN 40 130 150 150 150 150 O.D.
1 1/2" 100 110 110 110 110 PCD (bolt circle)
  4 x 14 4 x 18 4 x 18 4 x 18 4 x 18 # of holes x diam. of holes
DN 50 140 165 165 165 165 O.D.
2" 110 125 125 125 125 PCD (bolt circle)
  4 x 14 4 x 18 4 x 18 4 x 18 4 x 18 # of holes x diam. of holes
DN 65 160 185 185 185 185 O.D.
2 1/2" 130 145 145 145 145 PCD (bolt circle)
  4 x 14 4 x 18 4 x 18 8 x 18 8 x 18 # of holes x diam. of holes
DN 80 190 200 200 200 200 O.D.
3" 150 160 160 160 160 PCD (bolt circle)
  4 x 18 8 x 18 8 x 18 8 x 18 8 x 18 # of holes x diam. of holes
DN 100 210 220 220 235 235 O.D.
4" 170 180 180 190 190 PCD (bolt circle)
  4 x 18 8 x 18 8 x 18 8 x 22 8 x 22 # of holes x diam. of holes
DN 125 240 250 250 270 270 O.D.
5" 200 210 210 220 220 PCD (bolt circle)
  8 x 18 8 x 18 8 x 18 8 x 26 8 x 26 # of holes x diam. of holes
DN 150 265 285 285 300 300 O.D.
6" 225 240 240 250 250 PCD (bolt circle)
  8 x 18 8 x 22 8 x 22 8 x 26 8 x 26 # of holes x diam. of holes
DN 175   315 315 330 350 O.D.
7"   270 270 280 295 PCD (bolt circle)
    8 x 22 8 x 22 12 x 26 12 x 30 # of holes x diam. of holes
DN 200 320 340 340 360 375 O.D.
8" 280 295 295 310 320 PCD (bolt circle)
  8 x 18 8 x 22 12 x 22 12 x 26 12 x 30 # of holes x diam. of holes
DN 250 375 395 405 425 450 O.D.
10" 335 350 355 370 385 PCD (bolt circle)
  12 x 18 12 x 22 12 x 26 12 x 30 12 x 33 # of holes x diam. of holes
DN 300 440 445 460 485 515 O.D.
12" 395 400 410 430 450 PCD (bolt circle)
  12 x 22 12 x 22 12 x 26 16 x 30 16 x 33 # of holes x diam. of holes
DN 350 490 505 520 555 580 O.D.
14" 445 460 470 490 510 PCD (bolt circle)
  12 x 22 16 x 22 16 x 26 16 x 33 16 x 36 # of holes x diam. of holes
DN 400 540 565 580 620 660 O.D.
16" 495 515 525 550 585 PCD (bolt circle)
  16 x 22 16 x 26 16 x 30 16 x 36 16 x 39 # of holes x diam. of holes
DN 500 645 670 715 730 755 O.D.
20" 600 620 650 660 670 PCD (bolt circle)
  20 x 22 20 x 26 20 x 33 20 x 36 20 x 42 # of holes x diam. of holes
DN 600 755 780 840 845   O.D.
24" 705 725 770 770   PCD (bolt circle)
  20 x 24 20 x 27 20 x 33 20 x 36   # of holes x diam. of holes
Packing
Packaging of DIN Flanges

At Steel will be special DIN flanges with plastic cover to ensure the integrity of sealing surface. Bubble bag, then put in to export wooden neatly in to products during transportation to prevent bumps , scratches and other situations encountered or as per customer requirement.

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. Welding Neck Flanges, NW Long Weld Neck Flanges
The Welding neck flanges is normally referred to as the high hub flange. Threaded Flanges, TH Flanges
Threaded Flanges can be used in very high pressure services and their major advantage is that they can be assembled without welding. 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, BL Flange, BLRF
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.
Applications Of DIN Flanges
  • 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 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


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