Welding neck flange is a type of pipe fitting that refers to a flange with a neck and a transition to a circular pipe, and is welded to the pipe
Welding neck flanges are not easily deformed, have good sealing, are widely used, have corresponding requirements for rigidity and elasticity, and reasonable welding thinning transition. The distance between the weld and the joint surface is large, and the joint surface is free from welding temperature deformation. It adopts a relatively complex trumpet shaped structure and is suitable for pipelines with large pressure or temperature fluctuations or high temperature, high pressure, and low temperature pipelines. It is generally used for the connection of pipelines and valves with PN greater than 2.5MPa; It is also used on pipelines that transport expensive, flammable, and explosive media.
Specification:
- Sizes:1/2”-120”;DN15-DN3000
- Materials:
Carbon steel flange (CS) : ASTM A105, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70;
Stainless steel flange (SS) : ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;
Alloy flange (AS) : ASTM A182F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, ST45.8;
- Standards:
ASME B16.5; HG20592; DIN2527、2573、2627-2638、2673、2552、2653、2655、2656、2641、2642、2565-2569; GOST12820; JIS B2220
- Application:
Water treatment; Power plant accessories; Chemical engineering; Shipbuilding; Nuclear energy; Garbage disposal; natural gas; petroleum
| 16BAR | ||||||||||||||||||
| Bore | Common Dimention | Welding Neck | Raised Face | Driling | Approx Weght(kg) | |||||||||||||
| Norminal Bore |
d1 | D | WekingNeck | t | K | T | d3 | s | a | d4 | f | Number of Bolt | Daof Bot | d2 | DIN 5276 | DIN 2632 | ||
| Slop-on | Bild | |||||||||||||||||
| 10A | 14) 17.2* | 90 | 14 | 14 | 60 | 35 | 25 | 1.8 | 4 | 6 | 40 | 2 | 4 | M12(12) | 14 | 0.63 | 0.58 | |
| 28 | ||||||||||||||||||
| 15A | 20) 21.3* | 95 | 14 | 14 | 14 | 65 | 35 | 30 | 2 | 4 | 6 | 45 | 2 | 4 | M12(12”) | 14 | 0.72 | 0.648 |
| 32 | ||||||||||||||||||
| 20A | 25 26.9* | 105 | 16 | 16 | 16 | 75 | 38 | 38 | 2.3 | 4 | 6 | 58 | 2 | 4 | M12(12″) | 14 | 1.01 | 0.952 |
| 40 | ||||||||||||||||||
| 25A | 30 33.7* | 115 | 16 | 16 | 16 | 85 | 38 | 42 | 2.6 | 4 | 6 | 68 | 2 | 4 | M12(12″) | 14 | 1.23 | 1.14 |
| 45 | ||||||||||||||||||
| 32A | 38 42.4 | 140 | 16 | 16 | 16 | 100 | 40 | 52 | 26 | 6 | 6 | 78 | 2 | 4 | M16(58″) | 18 | 1.8 | 1.69 |
| 56 | ||||||||||||||||||
| 40A | 42.4 | 150 | 16 | 16 | 16 | 110 | 42 | 60 | 2.6 | 6 | 7 | 88 | 3 | 4 | M16(58″) | 18 | 2.09 | 1.86 |
| 44.5 48.3* | 64 | |||||||||||||||||
| 50A | 57 | 165 | 18 | 18 | 18 | 125 | 45 | 72 | 2.9 | 6 | 8 | 102 | 3 | 4 | M16(58”) | 18 | 2.88 | 2.53 |
| 65A | 60.3* | 185 | 18 | 18 | 18 | 145 | 45 | 75 | 2.9 | 6 | 10 | 122 | 3 | 4 | M16(58″) | 18 | 3.66 | 3.06 |
| 80A | 76.1 | 200 | 20 | 20 | 20 | 160 | 50 | 90 | 3.2 | 8 | 10 | 158 | 3 | 8 | M16(587) | 18 | 4.77 | 3.7 |
| 88.9* | 105 | |||||||||||||||||
| 100A | 108 | 220 | 20 | 20 | 20 | 180 | 52 | 125 | 3.6 | 8 | 12 | 158 | 3 | 8 | M16(58”) | 18 | 5.65 | 4.62 |
| 114.3* | 31 | |||||||||||||||||
| 125A | 133 | 250 | 22 | 22 | 22 | 210 | 55 | 50 | 40 | 8 | 12 | 188 | 3 | 8 | M16(58”) | 18 | 8.42 | 6.3 |
| 139.7* | 156 | |||||||||||||||||
| 150A | 159 | 285 | 24 | 22 | 22 | 240 | 55 | 175 | 4.5 | 10 | 12 | 212 | 3 | 8 | M2O(34″) | 23 | 10.4 | 7.75 |
| 168.3* | 184 | |||||||||||||||||
| 200A | 216 | 340 | 24 | 24 | 24 | 295 | 62 | 232 | 5.9 | 10 | 16 | 268 | 3 | 12 | M20(34″) | 23 | 16.1 | 11 |
| 219.1* | 235 | |||||||||||||||||
| 250A | 267 | 405 | 26 | 26 | 26 | 355 | 70 | 285 | 6.3 | 12 | 16 | 320 | 3 | 12 | M24(7/8″) | 27 | 24.9 | 15.6 |
| 273* | 292 | |||||||||||||||||
| 300A | 318 | 460 | 28 | 28 | 28 | 410 | 78 | 338 | 7.1 | 12 | 16 | 378 | 4 | 12 | M24(7/8″) | 27 | 35.1 | 22 |
| 323.9* | 344 | |||||||||||||||||
| 350A | 3556* 368 | 520 | 30 | 30 | 30 | 470 | 82 | 390 | 8 | 12 | 16 | 438 | 4 | 16 | M24(7/8”) | 27 | 47.8 | 28.7 |
| 400A | 406.4* 419 | 580 | 32 | 32 | 32 | 525 | 85 | 445 | 8 | 12 | 16 | 490 | 4 | 16 | M27(1″) | 30 | 63.5 | 36.3 |
| 500A | 508*521 | 715 | 34 | 38 | 34 | 650 | 90 | 548 | 8 | 12 | 16 | 610 | 4 | 20 | M30(11/8”) | 33 | 102 | 59.3 |
| 600A | 609.6* | 840 | 36 | 40 | 770 | 95 | 652 | 8.8 | 12 | 18 | 725 | 5 | 20 | M33(114″) | 36 | |||
| 622 | ||||||||||||||||||
| 700A | 7112 | 910 | 36 | 840 | 100 | 755 | 8.8 | 12 | 18 | 795 | 5 | 24 | M33(1/4”) | 36 | ||||
| 720 | ||||||||||||||||||
| 800A | 812.8* 820 | 1025 | 38 | 950 | 105 | 855 | 10 | 12 | 20 | 900 | 5 | 24 | M36(138″) | 39 | ||||
| 900A | 914.4* | 1125 | 40 | 1050 | 110 | 955 | 10 | 12 | 20 | 1000 | 5 | 28 | M36(138″) | 39 | ||||
| 920 | ||||||||||||||||||
| 1000A | 1016* | 1255 | 42 | 1170 | 120 | 1058 | 10 | 16 | 20 | 1115 | 5 | 28 | M39(11/2″) | 42 | ||||
| 1020 | ||||||||||||||||||
| NOTE*Out side diameter of pipe complied with ISO recommendation R64 | ||||||||||||||||||
