DIN Standard Flange

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DIN PN40 Flange, DIN PN16 Flange, DIN 2573-PN6 Flange, DIN 2576-PN10 Flange

DIN Flanges are standardized pipe flanges developed by the German Institute for Standardization (Deutsches Institut für Normung, or DIN). These flanges are widely used in piping systems across Europe and other regions for connecting pipes, valves, and other equipment. DIN flanges come in various pressure ratings, such as PN6, PN10, PN16, PN25, PN40, and PN100, making them suitable for a wide range of applications, from low-pressure systems to high-pressure industrial pipelines.

DIN Standard Flanges are available in different types, including weld neck flanges (DIN 2633, DIN 2634), blind flanges (DIN 2527), slip-on flanges (DIN 2502), and plate flanges (DIN 2573). DIN flanges are manufactured in materials like carbon steel, stainless steel, and alloy steel, ensuring durability and corrosion resistance. Commonly used in industries such as oil and gas, petrochemicals, water treatment, and power generation, DIN flanges offer reliable performance, precision, and compatibility with European piping standards.

Arrow Piping Solutions is a renowned manufacturer, supplier, and exporter of high-quality piping components, including DIN Standard flanges. With a strong focus on precision engineering and superior material quality. We offers a wide range of products in materials like stainless steel, carbon steel, alloy steel, duplex steel, nickel alloys, and other exotic metals, ensuring durability, corrosion resistance, and high performance under extreme conditions. Known for its commitment to customer satisfaction, We provides products that adhere to international standards like DIN. Backed by extensive industry experience, advanced infrastructure, and a skilled workforce, Arrow Piping Solutions has established itself as a trusted partner for reliable and cost-effective piping solutions worldwide.

Long Weld Neck Flange

DIN 2501-PN16, DIN 2502-PN25, DIN 2503-PN40, DIN 2631-PN6, DIN 2632-PN10 Pipe Flange, DIN 2527 blind flange, DIN 2573 plate flange, DIN 2634 weld neck flange, DIN 2502 slip-on flange, DIN PN40 forged flange

DIN Pipe Flange Specifications

SIZE RANGE

15mm (1/2" NPS ) up to 600mm ( 24" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12

STANDARDS / DIMENSION

ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN

PRESSURE CLASS

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64.

FLANGE FACE TYPE

FF—Flat Face, RF—Raised Face, FM—Female Face, M—Male Face, T—Tongue Face, G—Groove Face, RJ—Ring Joint.

CARBON STEEL

ASTM A105/A105N (SA105N), LTCS A350 LF2, A694

DUPLEX & SUPER DUPLEX

ASTM A182 / ASME SA182 - S31803, S32205, 2205, S32750, S32760, S32950, 2507.

STAINLESS STEEL

ASTM A182 F304, 304L, 304H, 316, 316L, 316H, 317, 317L, 321, 321H, 310, 310S, 347, 904L, etc.

ALLOY STEEL

ASTM A182 / SA182 - F1 / F5 / F9 / F11 / F12 / F22 / F91

MTC

EN 10204 3.2 and EN 10204 3.1, Test Certificates certifying NACE MR0175, NACE MR0103

Flanges ANSI/ASME B16.5 & B16.47
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Materials

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Stainless Steel ➜ Carbon Steel ➜ Alloy Steel ➜
Weld Neck Flange Diagram

DIN Flange - Dimensions & Weight

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Nominal BSP Pipe Size PN6 PN10 PN16 PN25 PN40 Description
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

DIN Flange PN6, PN10, PN16, PN25, PN40

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Germany standard flange DIN 2573 for soldering or welding - Nominal Pressure 6
Rated Diameter d1 d5 D b c k Holes Thread d2 Kg
ISO Series 1 DIN Series 2
15 – 20 21 80 12 5 55 4 M10 11 0.41
21.3 – 22
20 – 25 26 90 14 5 65 4 M10 11 0.60
26.9 – 27.6
25 – 30 31 100 14 5 75 4 M10 11 0.74
33.7 – 34.4
32 – 38 39 120 16 5 90 4 M12 14 1.19
42.4 – 43.1
40 – 44.5 45.5 130 16 5 100 4 M12 14 1.39
48.3 – 49
50 – 57 58.1 140 16 6 110 4 M12 14 1.53
60.3 – 61.1
65 76.1 – 77.1 160 16 6 130 4 M12 14 1.89
80 88.9 – 90.3 190 18 7 150 4 M16 18 2.98
100 – 108 109.6 210 18 7 170 4 M16 18 3.46
114.3 – 115.9
125 – 133 134.8 240 20 7 200 8 M16 18 4.60
139.7 – 141.6
150 – 159 161.1 265 20 7 225 8 M16 18 5.22
168.3 – 170.5
200 219.1 – 221.8 320 22 7 280 8 M16 18 7.15
250 – 267 270.2 375 24 7 335 12 M16 18 9.61
273 – 276.2
300 323.9 – 327.6 440 24 7 395 12 M20 22 12.60
350 355.6 – 359.7 490 26 7 445 12 M20 22 15.60
– 368 372.2
400 406.4 – 411 540 28 7 495 16 M20 22 18.40
– 419 423.7
(450)* 457 – 462.5 595 30 7 550 16 M20 22 21.40
500 508 – 531.6 645 30 7 600 20 M20 22 24.60

DIN 2573 PN6 Flange - Dimensions & Weight DIMENSIONS & WEIGHT

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Germany standard flange DIN 2573 for soldering or welding - Nominal Pressure 6
Rated Diameter d1 d5 D b c k Holes Thread d2 Kg
ISO Series 1 DIN Series 2
15 – 20 21 80 12 5 55 4 M10 11 0.41
21.3 – 22
20 – 25 26 90 14 5 65 4 M10 11 0.60
26.9 – 27.6
25 – 30 31 100 14 5 75 4 M10 11 0.74
33.7 – 34.4
32 – 38 39 120 16 5 90 4 M12 14 1.19
42.4 – 43.1
40 – 44.5 45.5 130 16 5 100 4 M12 14 1.39
48.3 – 49
50 – 57 58.1 140 16 6 110 4 M12 14 1.53
60.3 – 61.1
65 76.1 – 77.1 160 16 6 130 4 M12 14 1.89
80 88.9 – 90.3 190 18 7 150 4 M16 18 2.98
100 – 108 109.6 210 18 7 170 4 M16 18 3.46
114.3 – 115.9
125 – 133 134.8 240 20 7 200 8 M16 18 4.60
139.7 – 141.6
150 – 159 161.1 265 20 7 225 8 M16 18 5.22
168.3 – 170.5
200 219.1 – 221.8 320 22 7 280 8 M16 18 7.15
250 – 267 270.2 375 24 7 335 12 M16 18 9.61
273 – 276.2
300 323.9 – 327.6 440 24 7 395 12 M20 22 12.60
350 355.6 – 359.7 490 26 7 445 12 M20 22 15.60
– 368 372.2
400 406.4 – 411 540 28 7 495 16 M20 22 18.40
– 419 423.7
(450)* 457 – 462.5 595 30 7 550 16 M20 22 21.40
500 508 – 531.6 645 30 7 600 20 M20 22 24.60

DIN 2631 PN6 WNRF Flange - Dimensions & Weight

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Germany standard flange DIN 2573 for soldering or welding - Nominal Pressure 6
Rated Diameter d1 d5 D b c k Holes Thread d2 Kg
ISO Series 1 DIN Series 2
15 – 20 21 80 12 5 55 4 M10 11 0.41
21.3 – 22
20 – 25 26 90 14 5 65 4 M10 11 0.60
26.9 – 27.6
25 – 30 31 100 14 5 75 4 M10 11 0.74
33.7 – 34.4
32 – 38 39 120 16 5 90 4 M12 14 1.19
42.4 – 43.1
40 – 44.5 45.5 130 16 5 100 4 M12 14 1.39
48.3 – 49
50 – 57 58.1 140 16 6 110 4 M12 14 1.53
60.3 – 61.1
65 76.1 – 77.1 160 16 6 130 4 M12 14 1.89
80 88.9 – 90.3 190 18 7 150 4 M16 18 2.98
100 – 108 109.6 210 18 7 170 4 M16 18 3.46
114.3 – 115.9
125 – 133 134.8 240 20 7 200 8 M16 18 4.60
139.7 – 141.6
150 – 159 161.1 265 20 7 225 8 M16 18 5.22
168.3 – 170.5
200 219.1 – 221.8 320 22 7 280 8 M16 18 7.15
250 – 267 270.2 375 24 7 335 12 M16 18 9.61
273 – 276.2
300 323.9 – 327.6 440 24 7 395 12 M20 22 12.60
350 355.6 – 359.7 490 26 7 445 12 M20 22 15.60
– 368 372.2
400 406.4 – 411 540 28 7 495 16 M20 22 18.40
– 419 423.7
(450)* 457 – 462.5 595 30 7 550 16 M20 22 21.40
500 508 – 531.6 645 30 7 600 20 M20 22 24.60

DIN 2565/DIN 2566 PN6, PN16 Threaded Flange - Dimensions & Weight

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Germany standard flange DIN 2573 for soldering or welding - Nominal Pressure 6
Rated Diameter d1 d5 D b c k Holes Thread d2 Kg
ISO Series 1 DIN Series 2
15 – 20 21 80 12 5 55 4 M10 11 0.41
21.3 – 22
20 – 25 26 90 14 5 65 4 M10 11 0.60
26.9 – 27.6
25 – 30 31 100 14 5 75 4 M10 11 0.74
33.7 – 34.4
32 – 38 39 120 16 5 90 4 M12 14 1.19
42.4 – 43.1
40 – 44.5 45.5 130 16 5 100 4 M12 14 1.39
48.3 – 49
50 – 57 58.1 140 16 6 110 4 M12 14 1.53
60.3 – 61.1
65 76.1 – 77.1 160 16 6 130 4 M12 14 1.89
80 88.9 – 90.3 190 18 7 150 4 M16 18 2.98
100 – 108 109.6 210 18 7 170 4 M16 18 3.46
114.3 – 115.9
125 – 133 134.8 240 20 7 200 8 M16 18 4.60
139.7 – 141.6
150 – 159 161.1 265 20 7 225 8 M16 18 5.22
168.3 – 170.5
200 219.1 – 221.8 320 22 7 280 8 M16 18 7.15
250 – 267 270.2 375 24 7 335 12 M16 18 9.61
273 – 276.2
300 323.9 – 327.6 440 24 7 395 12 M20 22 12.60
350 355.6 – 359.7 490 26 7 445 12 M20 22 15.60
– 368 372.2
400 406.4 – 411 540 28 7 495 16 M20 22 18.40
– 419 423.7
(450)* 457 – 462.5 595 30 7 550 16 M20 22 21.40
500 508 – 531.6 645 30 7 600 20 M20 22 24.60

DIN 2527 Blind Flange (PN6, PN10, PN16, PN25, PN40) - Dimensions & Weight

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Germany standard flange DIN 2573 for soldering or welding - Nominal Pressure 6
Rated Diameter d1 d5 D b c k Holes Thread d2 Kg
ISO Series 1 DIN Series 2
15 – 20 21 80 12 5 55 4 M10 11 0.41
21.3 – 22
20 – 25 26 90 14 5 65 4 M10 11 0.60
26.9 – 27.6
25 – 30 31 100 14 5 75 4 M10 11 0.74
33.7 – 34.4
32 – 38 39 120 16 5 90 4 M12 14 1.19
42.4 – 43.1
40 – 44.5 45.5 130 16 5 100 4 M12 14 1.39
48.3 – 49
50 – 57 58.1 140 16 6 110 4 M12 14 1.53
60.3 – 61.1
65 76.1 – 77.1 160 16 6 130 4 M12 14 1.89
80 88.9 – 90.3 190 18 7 150 4 M16 18 2.98
100 – 108 109.6 210 18 7 170 4 M16 18 3.46
114.3 – 115.9
125 – 133 134.8 240 20 7 200 8 M16 18 4.60
139.7 – 141.6
150 – 159 161.1 265 20 7 225 8 M16 18 5.22
168.3 – 170.5
200 219.1 – 221.8 320 22 7 280 8 M16 18 7.15
250 – 267 270.2 375 24 7 335 12 M16 18 9.61
273 – 276.2
300 323.9 – 327.6 440 24 7 395 12 M20 22 12.60
350 355.6 – 359.7 490 26 7 445 12 M20 22 15.60
– 368 372.2
400 406.4 – 411 540 28 7 495 16 M20 22 18.40
– 419 423.7
(450)* 457 – 462.5 595 30 7 550 16 M20 22 21.40
500 508 – 531.6 645 30 7 600 20 M20 22 24.60

DIN 2642 PN10 Loose Flange - Dimensions & Weight

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Germany standard flange DIN 2573 for soldering or welding - Nominal Pressure 6
Rated Diameter d1 d5 D b c k Holes Thread d2 Kg
ISO Series 1 DIN Series 2
15 – 20 21 80 12 5 55 4 M10 11 0.41
21.3 – 22
20 – 25 26 90 14 5 65 4 M10 11 0.60
26.9 – 27.6
25 – 30 31 100 14 5 75 4 M10 11 0.74
33.7 – 34.4
32 – 38 39 120 16 5 90 4 M12 14 1.19
42.4 – 43.1
40 – 44.5 45.5 130 16 5 100 4 M12 14 1.39
48.3 – 49
50 – 57 58.1 140 16 6 110 4 M12 14 1.53
60.3 – 61.1
65 76.1 – 77.1 160 16 6 130 4 M12 14 1.89
80 88.9 – 90.3 190 18 7 150 4 M16 18 2.98
100 – 108 109.6 210 18 7 170 4 M16 18 3.46
114.3 – 115.9
125 – 133 134.8 240 20 7 200 8 M16 18 4.60
139.7 – 141.6
150 – 159 161.1 265 20 7 225 8 M16 18 5.22
168.3 – 170.5
200 219.1 – 221.8 320 22 7 280 8 M16 18 7.15
250 – 267 270.2 375 24 7 335 12 M16 18 9.61
273 – 276.2
300 323.9 – 327.6 440 24 7 395 12 M20 22 12.60
350 355.6 – 359.7 490 26 7 445 12 M20 22 15.60
– 368 372.2
400 406.4 – 411 540 28 7 495 16 M20 22 18.40
– 419 423.7
(450)* 457 – 462.5 595 30 7 550 16 M20 22 21.40
500 508 – 531.6 645 30 7 600 20 M20 22 24.60

DIN Flange Standards

Weld Neck Flanges are manufactured to comply with various international standards to ensure quality, compatibility, and reliability in industrial applications.

1. ASME/ANSI Standards (American)

  • ASME B16.5– Pipe Flanges and Flanged Fittings (NPS 1/2" to 24").
  • ASME B16.47 – Large Diameter Steel Flanges (Series A & B, NPS 26" to 60").
  • ASME B16.36 – Orifice Flanges.
  • ASME B16.48 – Line Blanks (Spectacle, Spade, and Spacer Flanges).
  • ANSI B16.1 – Cast Iron Flanges and Flanged Fittings.
  • ANSI B16.42 – Ductile Iron Pipe Flanges and Flanged Fittings.

2. ISO Standards (International)

  • ISO 7005-1 – Steel Flanges for General Applications.
  • ISO 7005-2 – Cast Iron Flanges.
  • ISO 7005-3 – Copper Alloy Flanges.

3. EN Standards (European)

  • EN 1092-1 – Steel Flanges.
  • EN 1092-2 – Cast Iron Flanges.
  • EN 1092-3 – Copper Alloy Flanges.
  • EN 1092-4 – Aluminium Alloy Flanges.

4. DIN Standards (German)

  • DIN 2527 – Blind Flanges.
  • DIN 2576 – Slip-On Flanges (PN 10).
  • DIN 2633 – Weld Neck Flanges (PN 16).
  • DIN 2634 – Weld Neck Flanges (PN 25).
  • DIN 2635 – Weld Neck Flanges (PN 40).

5. JIS Standards (Japanese)

  • JIS B2220 – Steel Pipe Flanges.

6. GOST Standards (Russian)

  • GOST 12820 – Flat Flanges for Steel Pipe Joints.
  • GOST 12821 – Steel Welded Flanges for High-Pressure Applications.
  • GOST 33259 – Flange Connections for Industrial Equipment and Pipelines.

7. BS Standards (British)

  • BS 4504 – Circular Flanges for Pipes, Valves, and Fittings.
  • BS 10 – Specification for Flanges and Bolting.

8. API Standards (Oil & Gas)

  • API 6A – Wellhead and Christmas Tree Equipment Flanges.
  • API 605 – Large-Diameter Carbon Steel Flanges (merged into ASME B16.47 Series B).

9. AWWA Standards (Waterworks)

  • AWWA C207 – Steel Ring Flanges for Waterworks Service.

10. MSS Standards (Manufacturer's Standardization Society)

  • MSS SP-44 – Steel Pipe Flanges (merged into ASME B16.47 Series A).
  • MSS SP-51 – Flanges for Glass-Lined Equipment.

11. Material-Specific Standards (ASTM)

  • ASTM A105 – Carbon Steel Forged Flanges.
  • ASTM A182 – Alloy and Stainless Steel Forged Flanges.
  • ASTM A350 – Carbon and Low-Alloy Steel Flanges for Low-Temperature Service.
  • ASTM A694 – High-Strength Carbon and Alloy Steel Flanges for High-Pressure Applications.

12. Other Regional and Specialized Standards

  • KS B1511 – Korean Standard Flanges.
  • NF E29-206 – French Standard Flanges.
  • SANS 1123 – South African Standard for Steel Flanges.

WHY Arrow Piping Solutions For DIN Pipe Flanges!

Arrow Piping Solutions stands out as a trusted and leading manufacturer, supplier, and exporter of DIN Pipe Flanges, offering unmatched quality, reliability, and customer satisfaction.

Extensive Product Range

Arrow Piping Solutions provides a comprehensive range of DIN flanges, including weld neck flanges, slip-on flanges, blind flanges, plate flanges, and more, catering to pressure classes such as PN6, PN10, PN16, PN25, PN40, and PN100.

Adherence to Standards

Arrow Piping Solutions strictly adheres to DIN standards and other international norms like ASTM, ASME, EN, and ISO, ensuring products meet precise specifications and global quality requirements.

Advanced Manufacturing Facilities

Equipped with state-of-the-art infrastructure and advanced machinery, Arrow Piping Solutions delivers flanges with accurate dimensions, perfect finishing, and strict quality control.

Global Supply Network

With a robust distribution network, Arrow Piping Solutions efficiently supplies DIN flanges to clients worldwide, ensuring timely deliveries and excellent service.

What are the common types of DIN Flanges?

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Weld Neck Flange (DIN 2631, DIN 2633, DIN 2634, DIN 2635)

Slip-On Flange (DIN 2576, DIN 2502)

Blind Flange (DIN 2527)

Plate Flange (DIN 2573)

How do DIN Flanges different from ANSI Flanges?

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DIN flanges follow the German standard with pressure ratings like PN6, PN10, PN16, etc., while ANSI flanges follow the ASME/ANSI B16.5 standard with pressure classes such as 150#, 300#, 600#, and so on. The dimensions and drilling patterns also differ between the two.

What is PN in DIN Flanges?

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PN stands for Pressure Nominal, indicating the maximum allowable working pressure of the flange in bars at a specific temperature. For example, PN16 denotes a pressure rating of 16 bars.

AVAILABLE TYPES OF FLANGES

TONGUE AND GROOVE FLANGES

MALE AND FEMALE FLANGES

WELD NECK FLANGES

BLIND FLANGES

Orifice Flange

Socket Weld Flange / SWRF Flange