Description
Product Description DIN EN 1092-1 Weld Neck Flange
DIN EN 1092-1 Weld Neck Flange is a widely used component in industrial piping systems, designed to ensure secure and durable connections for high-pressure applications. This flange standard, established by the European Union, specifies the dimensions, pressure ratings, and material requirements for Weld Neck Flanges in various industries such as oil and gas, chemical processing, power generation, and water treatment.
DIN EN 1092-1 is a European standard that specifies the dimensions and requirements for flanges, including the Weld Neck Flange. A Weld Neck Flange, also known as a Type 11 flange, is widely used in high-pressure and high-temperature applications due to its strong and robust design. It is characterized by a long tapered neck that is welded to the pipe, offering high strength and resistance to stress concentrations.
The primary feature of the DIN EN 1092-1 Weld Neck Flange is its long, tapered neck, which provides a smooth transition from the flange to the pipe. This design helps evenly distribute stresses, preventing stress concentrations that could lead to leaks or failures under high-pressure conditions. The neck allows for easy welding, ensuring a strong, leak-proof joint.
DIN EN 1092-1 Weld Neck Flanges are available in a wide range of sizes and materials, including carbon steel, stainless steel, and various alloys. These materials are selected for their excellent corrosion resistance, strength, and durability, ensuring a long service life in demanding environments. The flange standard offers different pressure classes, making it suitable for both low and high-pressure applications.
DIN EN 1092-1 Weld Neck Flange Dimension
Class 150 Weld Neck Flange Dimensions
Size in Inch Size in mm Outer Diameter Flange Thickness Hub OD Weld Neck OD Welding Neck Length Bore RF Diameter RF Height PCD Weld Face
A B C D E F G H I J
1/2 15 90 9.6 30 21.3 46 34.9 2 60.3 1.6
3/4 20 100 11.2 38 26.7 51 42.9 2 69.9 1.6
1 25 110 12.7 49 33.4 54 50.8 2 79.4 1.6
1 1/4 32 115 14.3 59 42.2 56 63.5 2 88.9 1.6
1 1/2 40 125 15.9 65 48.3 60 73 2 98.4 1.6
2 50 150 17.5 78 60.3 62 92.1 2 120.7 1.6
2 1/2 65 180 20.7 90 73 68 104.8 2 139.7 1.6
3 80 190 22.3 108 88.9 68 127 2 152.4 1.6
3 1/2 90 215 22.3 122 101.6 70 Welding Neck bore is derived from the pipe schedule 139.7 2 177.8 1.6
4 100 230 22.3 135 114.3 75 157.2 2 190.5 1.6
5 125 255 22.3 164 141.3 87 185.7 2 215.9 1.6
6 150 280 23.9 192 168.3 87 215.9 2 241.3 1.6
8 200 345 27 246 219.1 100 269.9 2 298.5 1.6
10 250 405 28.6 305 273 100 323.8 2 362 1.6
12 300 485 30.2 365 323.8 113 381 2 431.8 1.6
14 350 535 33.4 400 355.6 125 412.8 2 476.3 1.6
16 400 595 35 457 406.4 125 469.9 2 539.8 1.6
18 450 635 38.1 505 457.2 138 533.4 2 577.9 1.6
20 500 700 41.3 559 508 143 584.2 2 635 1.6
24 600 815 46.1 663 610 151 692.2 2 749.3 1.6
Class 150 Weld Neck Flange Stud & Bolt Dimensions
Size in Inch Size in mm Outer Diameter Flange Thickness Hub OD Weld Neck OD Welding Neck Length Bore RF Diameter RF Height PCD Weld Face
A B C D E F G H I J
1/2 15 95 12.7 38 21.3 51 34.9 2 66.7 1.6
3/4 20 115 14.3 48 26.7 56 42.9 2 82.6 1.6
1 25 125 15.9 54 33.4 60 50.8 2 88.9 1.6
1 1/4 32 135 17.5 64 42.2 64 63.5 2 98.4 1.6
1 1/2 40 155 19.1 70 48.3 67 73 2 114.3 1.6
2 50 165 20.7 84 60.3 68 92.1 2 127 1.6
2 1/2 65 190 23.9 100 73 75 104.8 2 149.2 1.6
3 80 210 27 117 88.9 78 127 2 168.3 1.6
3 1/2 90 230 28.6 133 101.6 79 Welding Neck bore is derived from the pipe schedule 139.7 2 184.2 1.6
4 100 255 30.2 146 114.3 84 157.2 2 200 1.6
5 125 280 33.4 178 141.3 97 185.7 2 235 1.6
6 150 320 35 206 168.3 97 215.9 2 269.9 1.6
8 200 380 39.7 260 219.1 110 269.9 2 330.2 1.6
10 250 445 46.1 321 273 116 323.8 2 387.4 1.6
12 300 520 49.3 375 323.8 129 381 2 450.8 1.6
14 350 585 52.4 425 355.6 141 412.8 2 514.4 1.6
16 400 650 55.6 483 406.4 144 469.9 2 571.5 1.6
18 450 710 58.8 533 457 157 533.4 2 628.6 1.6
20 500 775 62 587 508 160 584.2 2 685.8 1.6
24 600 915 68.3 702 610 167 692.2 2 812.8 1.6
Class 300 Weld Neck Flange Stud & Bolt Dimensions
Size in Inch Size in mm No of Bolts Bolt Size UNC Machine Bolt Length RF Stud Length Hole Size ISO Stud Size Weight in kg
1/2 15 4 1/2 55 65 5/8 M14 1.4
3/4 20 4 5/8 65 75 3/4 M16 1.4
1 25 4 5/8 65 75 3/4 M16 1.8
1 1/4 32 4 5/8 70 85 3/4 M16 2.3
1 1/2 40 4 3/4 75 90 7/8 M20 3.2
2 50 8 5/8 75 90 3/4 M16 4.1
2 1/2 65 8 3/4 85 100 7/8 M20 5.5
3 80 8 3/4 90 110 7/8 M20 6.8
3 1/2 90 8 3/4 95 110 7/8 M20 8.2
4 100 8 3/4 95 115 7/8 M20 11.4
5 125 8 3/4 110 120 7/8 M20 14.6
6 150 12 3/4 110 120 7/8 M20 19.1
8 200 12 7/8 120 140 1 M24 31
10 250 16 1 140 160 1 1/8 M27 42
12 300 16 1 1/8 145 170 1 1/4 M30 64
14 350 20 1 1/8 160 180 1 1/4 M30 82
16 400 20 1 1/4 165 190 1 3/8 M33 113
18 450 24 1 1/4 170 195 1 3/8 M33 145
20 500 24 1 1/4 185 205 1 3/8 M33 182
24 600 24 1 1/2 205 230 1 5/8 M39 264
Weld Neck Flange Weight Chart
Flange Size (inches) Class 150 (lbs) Class 300 (lbs) Class 400 (lbs) Class 600 (lbs) Class 900 (lbs) Class 1500 (lbs) Class 2500 (lbs)
½ 2 2 3 3 7 7 8
¾ 2 3 3.5 4 7 7 9
1 3 4 4 4 8.5 8.5 13
1¼ 3 5 4.5 6 10 10 20
1½ 4 7 8 8 14 14 28
2 6 9 10 12 24 24 42
2½ 10 12 14 18 31 31 52
3 11.5 18 18 23 36 36 94
3½ 12 20 26 26 53 53 146
4 16.5 26.5 35 42 86 86 244
5 21 36 43 68 110 110 378
6 26 45 57 81 187 187 576
8 42 69 89 120 268 268 1068
10 54 100 125 190 372 372 1608
12 88 142 175 226 562 562 -
14 114 206 233 347 685 685 -
16 140 250 295 481 924 924 -
18 165 320 360 555 1164 1164 -
20 197 400 445 690 2107 2107 -
22 225 465 505 720 - - -
24 268 580 640 977 - - -
Weld Neck Flange Tolerance
Dimension Tolerance
Outside Diameter (OD) ±1/16 in for ODs up to 24 in
±1/8 in for ODs over 24 in
Inside Diameter (ID) ±1/32 in for diameters up to 10 in
+1/16 in for diameters 12-18 in
+1/8 in, -1/16 in for diameters over 20 in
Diameter of Contact Face 1/16 in
Raised Face ±1/32 in
Tongue and Groove or Male and Female ±1/64 in
Diameter of Hub at Point of Welding +3/32 in, -1/32 in for hubs up to 5 in
+5/32 in, -1/32 in for hubs over 6 in
Diameter of Hub at Base ±1/16 in for hub bases up to 24 in
±1/8 in for hub bases over 24 in
Bolt Circle ±1/16 in
Bolt Hole Spacing +1/32 in
Eccentricity of Bolt Circle and Facing 1/32 in max
Length Thru Hub ±1/16 in for lengths up to 10 in
±1/8 in for lengths over 12 in
Thickness +1/8 in, -0 in for thicknesses up to 18 in
+3/16 in, -0 in for thicknesses over 20 in
Advantages:
- High pressure and temperature resistance
- Provides smooth flow with minimal turbulence
- Strong and durable connections
- Suitable for critical applications
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