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DIN 2634 PN 25 WELD NECK FLANGES

DIN 2634 PN 25 Weld Neck Flanges | #DIN 2634 Sch 40 Weld Neck Flange | #DIN 2634 PN 25 WNRF Flange | WNFF DIN 2634 | DIN 2634 PN 25 Weldneck Flange | DIN Weldneck Flange | #DIN 2634 PN 25 Weldneck Dimensions | DIN 2634 PN 25 weldneck flange schedule chart

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DIN 2634 Weld Neck Flange Manufacturer Supplier Distributors
DIN 2634 Weld Neck Flange Manufacturer Supplier Distributors
DIN 2634 Weld Neck Flange Manufacturer Supplier Distributors

DIN 2634 PN 25 Weld Neck Flanges are generally used in high pressure applications, where hot or cold temperatures exist. These steel DIN 2634 weld neck flanges are circumferentially welded into the system at its neck which means that the integrity of the butt welded area can be easily examined by radiography. These PN 25 weld neck flanges reduce the turbulence and erosion inside the pipeline because the bores of both pipe and flange match. This also reduces high stress concentration at the base of the hub of the PN weld neck pipe flange. Such weld neck are favoured in critical applications. The inside diameter of a PN 25 weld neck flange is machined to match the inside diameter of the pipe. Tesco Steel & Engineering manufacture a wide range of high quality DIN 2634 PN 25 Weld Neck Flanges in India.



DIN 2634 PN 25 WELD NECK FLANGE Dimensions

DIN 2634 PN 25 WELD NECK FLANGE Dimensions

Germany standard flange DIN 2634 welding neck flanges; nominal pressure 25

Pipe Flange Neck Raised face Screws Weight
(7,85 Kg/dm3)
Rated d1 D b k h1 d3 s r h2 d4 f Holes Thread d2 Kg
Diameter ISO Series DIN Series
15 - 20 95 16 65 38 30 2 4 6 45 2 4 M 12 14 0,746
21,3 - 32
20 - 25 105 18 75 40 38 2,3 4 6 58 2 4 M 12 14 1,06
26,9 - 40
25 - 30 115 18 85 40 42 2,6 4 6 68 2 4 M 12 14 1,29
33,7 - 45
32 - 38 140 18 100 42 52 2,6 6 6 78 2 4 M 16 18 1,88
42,4 - 56
40 - 44,5 150 18 110 45 60 2,6 6 7 88 3 4 M 16 18 2,33
48,3 - 64
50 - 57 165 20 125 48 72 2,9 6 8 102 3 4 M 16 18 2,82
60,3 - 75
65 76,1 - 185 22 145 52 90 2,9 6 10 122 3 8 M 16 18 3,74
80 88,9 - 200 24 160 58 105 3,2 8 12 138 3 8 M 16 18 4,75
100 - 108 235 24 190 65 128 3,6 8 12 162 3 8 M 20 22 6,52
114,3 - 134
125 - 133 270 26 220 68 155 4 8 12 188 3 8 M 24 26 9,07
139,7 - 162
150 - 159 300 28 250 75 182 4,5 10 12 218 3 8 M 24 26 11,8
168,3 - 192
(175) 193,7 - 350 28 280 75 218 5,6 10 15 248 3 12 M 24 26 13,4
200 219,1 - 360 30 310 80 244 6,3 10 16 278 3 12 M 24 26 17
250 - 267 425 32 370 88 292 7,1 12 18 335 3 12 M 27 30 24,4
273 - 298
300 323,9 - 485 34 430 92 352 8 12 18 395 4 16 M 27 30 31,2
350 355,6 - 555 38 490 100 398 8 12 20 450 4 16 M 30 33 47,2
- 368 44,2
400 406,4 - 620 40 550 110 452 8,8 12 20 505 4 16 M 33 36 61,7
- 419 57,9
(450) 457 - 670 42 600 110 500 8,8 12 20 550 4 20 M 33 36 71,9
500 508 - 730 44 660 125 558 10 12 20 615 4 20 M 33 36 89,6
600 610 - 845 46 770 125 660 11 12 20 720 5 20 M 36 39 104
700 711 - 960 46 875 125 760 13 20 24 820 5 24 M 39 42 136
800 813 - 1085 50 990 135 865 14 22 24 930 5 24 M 45 48 186
900 914 - 1185 54 1090 145 968 16 24 28 1030 5 28 M 45 48 236
1000 1016 - 1320 58 1210 155 1070 18 24 28 1140 5 28 M 52 56 307

 



Diameters & Drilling of DIN Flanges (mm)

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

O.D. = outside diameter PCD = bolt circle diameter PN = nominal pressure in bars
Note: (1 bar = 14.5 psi = 0.1 MPa = 100 KPa = 1.02 Kgf/cm²)

 



Advantages of using DIN 2634 PN 25 Weldneck Flanges

Weldneck flanges offer several advantages over other types of flanges, such as slip-on flanges. Here are some of the benefits of using weldneck flanges:

Superior Strength
Weldneck flanges have a long tapered hub that provides additional strength to the connection between the pipe and the flange. The welding process creates a permanent and durable bond that can withstand high pressure and extreme temperatures.

Versatility in Accommodating Different Pipe Sizes
Weldneck flanges are available in various sizes, making them suitable for use with pipes of different diameters. The flanges can also be used with pipes of different materials, such as stainless steel, carbon steel, and alloy steel.

Secure and Leak-Free Connection
The welding process creates a strong and leak-free connection between the pipe and the flange. This ensures that the piping system is safe and efficient, reducing the risk of leaks and other safety hazards.

Easy to Install and Maintain
Weldneck flanges are relatively easy to install, and the welding process can be completed quickly. The flanges are also easy to maintain, requiring only periodic inspection and maintenance to ensure that they are in good working condition.



Applications of DIN 2634 PN 25 Weldneck Flange

Weldneck flanges are used in various industrial piping applications, including:

Oil and Gas Industry
Weldneck flanges are commonly used in oil and gas piping systems, where they are used to transport crude oil, natural gas, and other petroleum products.

Chemical Processing Industry
Weldneck flanges are used in chemical processing plants to transport various chemicals and materials.

Water Treatment Industry
Weldneck flanges are used in water treatment plants to transport water and other fluids.

Power Generation Industry
Weldneck flanges are used in power generation plants to transport steam, gas, and other fluids.

Price List of Weldneck Flanges

Prices for DIN 2634 PN 25 Weldneck Flanges are very affordable.

Please click on the "Ask for Quote" button or click here to request the updated price list and ready stock information along with your requirement.
TESCO STEEL & ENGINEERING maintains a stock of all standard items and can export them at the best price.

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Countries we export to: Manufacturers / Suppliers / Stockist of DIN 2631 PN 25 Weld Neck Flanges in Kuwait, in UAE, in Germany,Saudi Arabia, West Africa, Dubai, Iraq, Congo, Mexico, Bahrain, Canada, Philippines, Thailand, Kenya, Oman, Malaysia, Turkey, Qatar, Sudan, Netherlands, Oman, Nigeria, Muscat, Russia, Vietnam, Angola, Indonesia, UK, Nigeria, Yemen, Italy, United States, Venezuela, Kazakhstan, Algeria, Jordan, Colombia, Libya, Chine, Peru, Iran, South Africa, Bangkok, Jiddah, Afghanistan, Israel, Zambia, Tanzania, Somalia, Pakistan.

Domestic: Mumbai, Delhi, Bangalore, Hyderabad, Ahmedabad, Chennai, Kolkata, Surat, Pune, Jaipur, Lucknow, Kanpur, Nagpur, Visakhapatnam, Indore, Thane, Bhopal, Pimpri-Chinchwad, Patna, Vadodara, Ghaziabad, Ludhiana, Coimbatore, Agra, Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chandigarh, Chattisgarh, Dadra and Nagar Haveli, Daman and Diu, Delhi, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu and Kashmir, Jharkhand, Karnataka, Kerala, Lakshadweep, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Puducherry, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, Uttarakhand, West Bengal.