1.Types: Slip-On, Welding Neck, Blind, Socket Welding, Threaded, Lap Joint and Plate etc;
2.Standard:
(1) ANSI B16.5, A105 150LB / 300LB / 600LB / 900LB / 1500LB / 2500LB
(2) DIN 2573 PN6 / DIN 2576 PN10 / DIN2502 PN16 / DIN2503 P25-40 / DIN2566 PN16 / DIN2631-2635 RST37.2 OR C22.8
(3) JIS SS400 OR SF440 5K / 10K / 16K / 20K / 30K
(4) UNI 2276 / 2277 / 2278 / 6084 / 6089 / 6090 / 2544 / 2282 / 6091-6093
(5) EN1092 PN6 / PN10 / PN16 / PN25 / PN40 / TYPE1 TYPE2 TYPE 5 TYPE 12 TYPE 13
(6) BS4504 SANI1123 1000/3, 1600/3, 2500/3, T/D, T/E, T/F carbon steel flange
(7) AS2129 TABLE D / TABLE H / TABLE E carbon steel flange
(8) GOST 12820-80 / 12821-80 carbon steel flange
3.Wall Thickness: Sch10, Sch20 , Sch30, STD, Sch40, XS,Sch80, Sch100, Sch120, Sch140, XXS;
4.Pressure Rating: Class 150LBS, 300LBS, 600LBS, 900LBS, 1500LBS, 2000LBS, 3000LBS, 6000LBS, 9000 LBS;
5.Size: 1/2" - 24";
6.Surface treatment: Anti-rust oil, black / yellow / transparent / electric galvanized / hot galvanized.
Threaded flange does not belong to the high pressure flange, the applicable pressure is small, such as engineering construction, air conditioning water systems, etc., is safe to use. Threaded flange is often said to be a kind of wire products, such as the home used to enter the water pipe fittings, is the wire, more often in engineering construction, with easy installation, easy maintenance, without the advantages of welding, can not allow welding, not easy to weld, or welding performance is not good on the pipeline use. Threaded flange does not belong to the high-pressure flange, standard threaded flange is necked flange, in addition to the flange is also different, other sizes with neck flat welding flange, socket welding flange the same, threaded flange one end with the pipe threaded connection, the other end with other flanges, flange cover, equipment, valves, etc. connected.
Threaded flange not only saves space and reduces weight, but also ensures that the joint will not leak and has good sealing performance. The compact flange size is reduced because the diameter of the seal is reduced, which will reduce the section of the sealing surface. Secondly, the flange gasket has been replaced by the sealing ring to ensure that the sealing surface matches the sealing surface. In this way, only a small pressure is required to compress the sealing surface. With the decrease of the required pressure, the size and number of bolts can be reduced accordingly. Therefore, a new product with small volume and light weight (70% ~ 80% less than the weight of the traditional flange) is designed. Therefore, the flat welding flange reduces the quality and space, and plays an important role in industrial application. Sealing principle of flat welding flange: the two sealing surfaces of the bolt squeeze the flange gasket and form a seal, but this also leads to the damage of the seal. In order to keep the seal, it is necessary to maintain a huge bolt force. Therefore, the bolt should be made larger. The larger bolt should match the larger nut, which means that the bolt with larger diameter is needed to create conditions for tightening the nut. However, the larger the diameter of the bolt, the applicable flange will become bent by increasing the wall thickness of the flange part.
Nominal size | Outside diam. of flange | Thick. of flange | Diam. of raised face | Diam of hub at base | Length thru hub | Min. thread lenght | Min. counter | No. of holes | Diam. of holes | Diam. of bolts | Diam. of bolt circle | Approx. weight pounds Kg | |
-bore | |||||||||||||
O | C | R | X | Y | T | Q | |||||||
in. | 1/2" | 3.5 | 0.44 | 1.38 | 1.19 | 0.62 | 0.62 | 4 | 0.62 | 1/2 | 2.38 | 1 | |
mm. | 88.9 | 11.2 | 35.1 | 30.2 | 15.7 | 15.7 | 15.7 | 12.7 | 60.5 | 0.5 | |||
in. | 3/4" | 3.88 | 0.5 | 1.69 | 1.5 | 0.62 | 0.62 | 4 | 0.62 | 1/2 | 2.75 | 2 | |
mm. | 98.6 | 12.7 | 42.9 | 38.1 | 15.7 | 15.7 | 15.7 | 12.7 | 69.9 | 1 | |||
in. | 1" | 4.25 | 0.56 | 2 | 1.94 | 0.69 | 0.69 | 4 | 0.62 | 1/2 | 3.12 | 2 | |
mm. | 108 | 14.2 | 50.8 | 49.3 | 17.5 | 17.5 | 15.7 | 12.7 | 79.2 | 1 | |||
in. | 1 1/4" | 4.62 | 0.62 | 2.5 | 2.31 | 0.81 | 0.81 | 4 | 0.62 | 1/2 | 3.5 | 3 | |
mm. | 117.3 | 15.7 | 63.5 | 58.7 | 20.6 | 20.6 | 15.7 | 12.7 | 88.9 | 1 | |||
in. | 1 1/2" | 5 | 0.69 | 2.88 | 2.56 | 0.88 | 0.88 | 4 | 0.62 | 1/2 | 3.88 | 3 | |
mm. | 127 | 17.5 | 73.2 | 65 | 22.4 | 22.4 | 15.7 | 12.7 | 98.6 | 1 | |||
in. | 2" | 6 | 0.75 | 3.62 | 3.06 | 1 | 1 | 4 | 0.75 | 5/8 | 4.75 | 5 | |
mm. | 152.4 | 19.1 | 91.9 | 77.7 | 25.4 | 25.4 | 19.1 | 15.9 | 120.7 | 2 | |||
in. | 2 1/2" | 7 | 0.88 | 4.12 | 3.56 | 1.12 | 1.12 | 4 | 0.75 | 5/8 | 5.5 | 7 | |
mm. | 177.8 | 22.4 | 104.6 | 90.4 | 28.4 | 28.4 | 19.1 | 15.9 | 139.7 | 3 | |||
in. | 3" | 7.5 | 0.94 | 5 | 4.25 | 1.19 | 1.19 | 4 | 0.75 | 5/8 | 6 | 8 | |
mm. | 190.5 | 23.9 | 127 | 108 | 30.2 | 30.2 | 19.1 | 15.9 | 152.4 | 4 | |||
in. | 3 1/2" | 8.5 | 0.94 | 5.5 | 4.81 | 1.25 | 1.25 | 8 | 0.75 | 5/8 | 7 | 11 | |
mm. | 215.9 | 23.9 | 139.7 | 122.2 | 31.8 | 31.8 | 19.1 | 15.9 | 177.8 | 5 | |||
in. | 4" | 9 | 0.94 | 6.19 | 5.31 | 1.31 | 1.31 | 8 | 0.75 | 5/8 | 7.5 | 13 | |
mm. | 228.6 | 23.9 | 157.2 | 134.9 | 33.3 | 33.3 | 19.1 | 15.9 | 190.5 | 6 | |||
in. | 5" | 10 | 0.94 | 7.31 | 6.44 | 1.44 | 1.44 | 8 | 0.88 | 3/4 | 8.5 | 15 | |
mm. | 254 | 23.9 | 185.7 | 163.6 | 36.6 | 36.6 | 22.4 | 19.1 | 215.9 | 7 | |||
in. | 6" | 11 | 1 | 8.5 | 7.56 | 1.56 | 1.56 | 8 | 0.88 | 3/4 | 9.5 | 19 | |
mm. | 279.4 | 25.4 | 215.9 | 192 | 39.6 | 39.6 | 22.4 | 19.1 | 241.3 | 9 | |||
in. | 8" | 13.5 | 1.12 | 10.62 | 9.69 | 1.75 | 1.75 | 8 | 0.88 | 3/4 | 11.75 | 30 | |
mm. | 342.9 | 28.4 | 269.7 | 246.1 | 44.5 | 44.5 | 22.4 | 19.1 | 298.5 | 14 | |||
in. | 10" | 16 | 1.19 | 12.75 | 12 | 1.94 | 1.94 | 12 | 1 | 7/8 | 14.25 | 43 | |
mm. | 406.4 | 30.2 | 323.9 | 304.8 | 49.3 | 49.3 | 25.4 | 22.2 | 362 | 20 | |||
in. | 12" | 19 | 1.25 | 15 | 14.38 | 2.19 | 2.19 | 12 | 1 | 7/8 | 17 | 64 | |
mm. | 482.6 | 31.8 | 381 | 365.3 | 55.6 | 55.6 | 25.4 | 22.2 | 431.8 | 29 | |||
in. | 14" | 21 | 1.38 | 16.25 | 15.75 | 2.25 | 2.25 | 12 | 1.12 | 1 | 18.75 | 90 | |
mm. | 533.4 | 35.1 | 412.8 | 400.1 | 57.2 | 57.2 | 28.4 | 25.4 | 476.3 | 41 | |||
in. | 16" | 23.5 | 1.44 | 18.5 | 18 | 2.5 | 2.5 | 16 | 1.12 | 1 | 21.25 | 98 | |
mm. | 596.9 | 36.6 | 469.9 | 457.2 | 63.5 | 63.5 | 28.4 | 25.4 | 539.8 | 44 | |||
in. | 18" | 25 | 1.56 | 21 | 19.88 | 2.69 | 2.69 | 16 | 1.25 | 1.13 | 22.75 | 130 | |
mm. | 635 | 39.6 | 533.4 | 505 | 68.3 | 68.3 | 31.8 | 28.6 | 577.9 | 59 | |||
in. | 20" | 27.5 | 1.69 | 23 | 22 | 2.88 | 2.88 | 20 | 1.25 | 1 1/8 | 25 | 165 | |
mm. | 698.5 | 42.9 | 584.2 | 558.8 | 73.2 | 73.2 | 31.8 | 28.6 | 635 | 75 | |||
in. | 24" | 32 | 1.88 | 27.25 | 26.12 | 3.25 | 3.25 | 20 | 1.38 | 1 1/4 | 29.5 | 220 | |
mm. | 812.8 | 47.8 | 692.2 | 663.4 | 82.6 | 82.6 | 35.1 | 31.8 | 749.3 | 100 |
Nominal size | Outside diam. of flange | Thick. of flange | Diam. of raised face | Diam of hub at base | Length thru hub | Min. thread length | Min. counter- | No. of holes | Diam. of holes | Diam. of bolts | Diam. of bolt circle | Approx. weight pounds Kg | |
bore | |||||||||||||
O | C | R | X | Y | T | Q | |||||||
in. | 1/2" | 3.75 | 0.56 | 1.38 | 1.5 | 0.88 | 0.62 | 0.93 | 4 | 0.62 | 1/2 | 2.62 | 2 |
mm. | 95.3 | 14.2 | 35.1 | 38.1 | 22.4 | 15.7 | 23.6 | 15.7 | 12.7 | 66.5 | 1 | ||
in. | 3/4" | 4.62 | 0.62 | 1.69 | 1.88 | 1 | 0.62 | 1.14 | 4 | 0.75 | 5/8 | 3.25 | 3 |
mm. | 117.3 | 15.7 | 42.9 | 47.8 | 25.4 | 15.7 | 29 | 19.1 | 15.9 | 82.6 | 1 | ||
in. | 1" | 4.88 | 0.69 | 2 | 2.12 | 1.06 | 0.69 | 1.41 | 4 | 0.75 | 5/8 | 3.5 | 3 |
mm. | 124 | 17.5 | 50.8 | 53.8 | 26.9 | 17.5 | 35.8 | 19.1 | 15.9 | 88.9 | 1 | ||
in. | 1 1/4" | 5.25 | 0.75 | 2.5 | 2.5 | 1.06 | 0.81 | 1.75 | 4 | 0.75 | 5/8 | 3.88 | 4 |
mm. | 133.4 | 19.1 | 63.5 | 63.5 | 26.9 | 20.6 | 44.5 | 19.1 | 15.9 | 98.6 | 2 | ||
in. | 1 1/2" | 6.12 | 0.81 | 2.88 | 2.75 | 1.19 | 0.88 | 1.99 | 4 | 0.88 | 3/4 | 4.5 | 6 |
mm. | 155.4 | 20.6 | 73.2 | 69.9 | 30.2 | 22.4 | 50.5 | 22.4 | 19.1 | 114.3 | 3 | ||
in. | 2" | 6.5 | 0.88 | 3.62 | 3.31 | 1.31 | 1.12 | 2.5 | 8 | 0.75 | 5/8 | 5 | 7 |
mm. | 165.1 | 22.4 | 91.9 | 84.1 | 33.3 | 28.4 | 63.5 | 19.1 | 15.9 | 127 | 3 | ||
in. | 2 1/2" | 7.5 | 1 | 4.12 | 3.94 | 1.5 | 1.25 | 3 | 8 | 0.88 | 3/4 | 5.88 | 10 |
mm. | 190.5 | 25.4 | 104.6 | 100.1 | 38.1 | 31.8 | 76.2 | 22.4 | 19.1 | 149.4 | 5 | ||
in. | 3" | 8.25 | 1.12 | 5 | 4.62 | 1.69 | 1.25 | 3.63 | 8 | 0.88 | 3/4 | 6.62 | 13 |
mm. | 209.6 | 28.4 | 127 | 117.3 | 42.9 | 31.8 | 92.2 | 22.4 | 19.1 | 168.1 | 6 | ||
in. | 3 1/2" | 9 | 1.19 | 5.5 | 5.25 | 1.75 | 1.44 | 4.13 | 8 | 0.88 | 3/4 | 7.25 | 17 |
mm. | 228.6 | 30.2 | 139.7 | 133.4 | 44.5 | 36.6 | 104.9 | 22.4 | 19.1 | 184.2 | 8 | ||
in. | 4" | 10 | 1.25 | 6.19 | 5.75 | 1.88 | 1.44 | 4.63 | 8 | 0.88 | 3/4 | 7.88 | 22 |
mm. | 254 | 31.8 | 157.2 | 146.1 | 47.8 | 36.6 | 117.6 | 22.4 | 19.1 | 200.2 | 10 | ||
in. | 5" | 11 | 1.38 | 7.31 | 7 | 2 | 1.69 | 5.69 | 8 | 0.88 | 3/4 | 9.25 | 28 |
mm. | 279.4 | 35.1 | 185.7 | 177.8 | 50.8 | 42.9 | 144.5 | 22.4 | 19.1 | 235 | 13 | ||
in. | 6" | 12.5 | 1.44 | 8.5 | 8.12 | 2.06 | 1.81 | 6.75 | 12 | 0.88 | 3/4 | 10.62 | 39 |
mm. | 317.5 | 36.6 | 215.9 | 206.2 | 52.3 | 46 | 171.5 | 22.4 | 19.1 | 269.7 | 18 | ||
in. | 8" | 15 | 1.62 | 10.62 | 10.25 | 2.44 | 2 | 8.75 | 12 | 1 | 7/8 | 13 | 58 |
mm. | 381 | 41.1 | 269.7 | 260.4 | 62 | 50.8 | 222.3 | 25.4 | 22.2 | 330.2 | 26 | ||
in. | 10" | 17.5 | 1.88 | 12.75 | 12.62 | 2.62 | 2.19 | 10.88 | 16 | 1.12 | 1 | 15.25 | 81 |
mm. | 444.5 | 47.8 | 323.9 | 320.5 | 66.5 | 55.6 | 276.4 | 28.4 | 25.4 | 387.4 | 37 | ||
in. | 12" | 20.5 | 2 | 15 | 14.75 | 2.88 | 2.38 | 12.94 | 16 | 1.25 | 1 1/8 | 17.75 | 115 |
mm. | 520.7 | 50.8 | 381 | 374.7 | 73.2 | 60.5 | 328.7 | 31.8 | 28.6 | 450.9 | 52 | ||
in. | 14" | 23 | 2.12 | 16.25 | 16.75 | 3 | 2.5 | 14.19 | 20 | 1.25 | 1 1/8 | 20.25 | 165 |
mm. | 584.2 | 53.8 | 412.8 | 425.5 | 76.2 | 63.5 | 360.4 | 31.8 | 28.6 | 514.4 | 75 | ||
in. | 16" | 25.5 | 2.25 | 18.5 | 19 | 3.25 | 2.69 | 16.19 | 20 | 1.38 | 1 1/4 | 22.5 | 190 |
mm. | 647.7 | 57.2 | 469.9 | 482.6 | 82.6 | 68.3 | 411.2 | 35.1 | 31.8 | 571.5 | 86 | ||
in. | 18" | 28 | 2.38 | 21 | 21 | 3.5 | 2.75 | 18.19 | 24 | 1.38 | 1 1/4 | 24.75 | 250 |
mm. | 711.2 | 60.5 | 533.4 | 533.4 | 88.9 | 69.9 | 462 | 35.1 | 31.8 | 628.7 | 113 | ||
in. | 20" | 30.5 | 2.5 | 23 | 23.12 | 3.75 | 2.88 | 20.19 | 24 | 1.38 | 1 1/4 | 27 | 315 |
mm. | 774.7 | 63.5 | 584.2 | 587.2 | 95.3 | 73.2 | 512.8 | 35.1 | 31.8 | 685.8 | 143 | ||
in. | 24" | 36 | 2.75 | 27.25 | 27.62 | 4.19 | 3.25 | 24.19 | 24 | 1.62 | 1 /2 | 32 | 475 |
mm. | 914.4 | 69.9 | 692.2 | 701.5 | 106.4 | 82.6 | 614.4 | 41.1 | 38.1 | 812.8 | 215 |
Nominal size | Outside diam. of flange | Thick. of flange | Diam. of raised face | Diam of hub at base | Length thru hub | Min. thread length | Min. counter- | No. of holes | Diam. of holes | Diam. of bolts | Diam. of bolt circle | Approx. weight pounds Kg | |
bore | |||||||||||||
O | C | R | X | Y | T | Q | |||||||
in. | 1/2" | 3.75 | 0.56 | 1.38 | 1.5 | 0.88 | 0.62 | 0.93 | 4 | 0.62 | 1/2 | 2.62 | 2 |
mm. | 95.3 | 14.2 | 35.1 | 38.1 | 22.4 | 15.7 | 23.6 | 15.7 | 12.7 | 66.5 | 1 | ||
in. | 3/4" | 4.62 | 0.62 | 1.69 | 1.88 | 1 | 0.62 | 1.14 | 4 | 0.75 | 5/8 | 3.25 | 3 |
mm. | 117.3 | 15.7 | 42.9 | 47.8 | 25.4 | 15.7 | 29 | 19.1 | 15.9 | 82.6 | 1 | ||
in. | 1" | 4.88 | 0.69 | 2 | 2.12 | 1.06 | 0.69 | 1.41 | 4 | 0.75 | 5/8 | 3.5 | 4 |
mm. | 124 | 17.5 | 50.8 | 53.8 | 26.9 | 17.5 | 35.8 | 19.1 | 15.9 | 88.9 | 2 | ||
in. | 1 1/4" | 5.25 | 0.81 | 2.5 | 2.5 | 1.12 | 0.81 | 1.75 | 4 | 0.75 | 5/8 | 3.88 | 5 |
mm. | 133.4 | 20.6 | 63.5 | 63.5 | 28.4 | 20.6 | 44.5 | 19.1 | 15.9 | 98.6 | 2 | ||
in. | 1 1/2" | 6.12 | 0.88 | 2.88 | 2.75 | 1.25 | 0.88 | 1.99 | 4 | 0.88 | 3/4 | 4.5 | 7 |
mm. | 155.4 | 22.4 | 73.2 | 69.9 | 31.8 | 22.4 | 50.5 | 22.4 | 19.1 | 114.3 | 3 | ||
in. | 2" | 6.5 | 1 | 3.62 | 3.31 | 1.44 | 1.12 | 2.5 | 8 | 0.75 | 5/8 | 5 | 9 |
mm. | 165.1 | 25.4 | 91.9 | 84.1 | 36.6 | 28.4 | 63.5 | 19.1 | 15.9 | 127 | 4 | ||
in. | 2 1/2" | 7.5 | 1.12 | 4.12 | 3.94 | 1.62 | 1.25 | 3 | 8 | 0.88 | 3/4 | 5.88 | 13 |
mm. | 190.5 | 28.4 | 104.6 | 100.1 | 41.1 | 31.8 | 76.2 | 22.4 | 19.1 | 149.4 | 6 | ||
in. | 3" | 8.25 | 1.25 | 5 | 4.62 | 1.81 | 1.38 | 3.63 | 8 | 0.88 | 3/4 | 6.62 | 16 |
mm. | 209.6 | 31.8 | 127 | 117.3 | 46 | 35.1 | 92.2 | 22.4 | 19.1 | 168.1 | 7 | ||
in. | 3 1/2" | 9 | 1.38 | 5.5 | 5.25 | 1.94 | 1.56 | 4.13 | 8 | 1 | 7/8 | 7.25 | 21 |
mm. | 228.6 | 35.1 | 139.7 | 133.4 | 49.3 | 39.6 | 104.9 | 25.4 | 22.2 | 184.2 | 10 | ||
in. | 4" | 10.75 | 1.5 | 6.19 | 6 | 2.12 | 1.62 | 4.63 | 8 | 1 | 7/8 | 8.5 | 37 |
mm. | 273.1 | 38.1 | 157.2 | 152.4 | 53.8 | 41.1 | 117.6 | 25.4 | 22.2 | 215.9 | 17 | ||
in. | 5" | 13 | 1.75 | 7.31 | 7.44 | 2.38 | 1.88 | 5.69 | 8 | 1.12 | 1 | 10.5 | 63 |
mm. | 330.2 | 44.5 | 185.7 | 189 | 60.5 | 47.8 | 144.5 | 28.4 | 25.4 | 266.7 | 29 | ||
in. | 6" | 14 | 1.88 | 8.5 | 8.75 | 2.62 | 2 | 6.75 | 12 | 1.12 | 1 | 11.5 | 80 |
mm. | 355.6 | 47.8 | 215.9 | 222.3 | 66.5 | 50.8 | 171.5 | 28.4 | 25.4 | 292.1 | 36 | ||
in. | 8" | 16.5 | 2.19 | 10.62 | 10.75 | 3 | 2.25 | 8.75 | 12 | 1.25 | 11/8 | 13.75 | 115 |
mm. | 419.1 | 55.6 | 269.7 | 273.1 | 76.2 | 57.2 | 222.3 | 31.8 | 28.6 | 349.3 | 52 | ||
in. | 10" | 20 | 2.5 | 12.75 | 13.5 | 3.38 | 2.56 | 10.88 | 16 | 1.38 | 1 1/4 | 17 | 170 |
mm. | 508 | 63.5 | 323.9 | 342.9 | 85.9 | 65 | 276.4 | 35.1 | 31.8 | 431.8 | 77 | ||
in. | 12" | 22 | 2.62 | 15 | 15.75 | 3.62 | 2.75 | 12.94 | 20 | 1.38 | 1 1/4 | 19.25 | 200 |
mm. | 558.8 | 66.5 | 381 | 400.1 | 91.9 | 69.9 | 328.7 | 35.1 | 31.8 | 489 | 91 | ||
in. | 14" | 23.75 | 2.75 | 16.25 | 17 | 3.69 | 2.88 | 14.19 | 20 | 1.5 | 1 3/8 | 20.75 | 230 |
mm. | 603.3 | 69.9 | 412.8 | 431.8 | 93.7 | 2.9 | 360.4 | 38.1 | 34.9 | 527.1 | 104 | ||
in. | 16" | 27 | 3 | 18.5 | 19.5 | 4.19 | 3.06 | 16.19 | 20 | 1.62 | 1 1/2 | 23.75 | 330 |
mm. | 685.8 | 76.2 | 469.9 | 495.3 | 106.4 | 77.7 | 411.2 | 41.1 | 38.1 | 603.3 | 150 | ||
in. | 18" | 29.25 | 3.25 | 21 | 21.5 | 4.62 | 3.12 | 18.19 | 20 | 1.75 | 1.63 | 25.75 | 400 |
mm. | 743 | 82.6 | 533.4 | 546.1 | 117.3 | 79.2 | 462 | 44.5 | 41.3 | 654.1 | 181 | ||
in. | 20" | 32 | 3.5 | 23 | 24 | 5 | 3.25 | 20.19 | 24 | 1.75 | 1 5/8 | 28.5 | 510 |
mm. | 812.8 | 88.9 | 584.2 | 609.6 | 127 | 82.6 | 512.8 | 44.5 | 41.3 | 723.9 | 231 | ||
in. | 24" | 37 | 4 | 27.25 | 28.25 | 5.5 | 3.62 | 24.19 | 24 | 2 | 1 7/8 | 33 | 730 |
mm. | 939.8 | 101.6 | 692.2 | 717.6 | 139.7 | 91.9 | 614.4 | 50.8 | 47.6 | 838.2 | 331 |