Flange specification table flange classification method

The flange is the interconnecting part between the pipe and the pipe, used for the connection between the pipe ends; it is also used in the flange of the equipment for the connection between the two devices, such as the reducer flange. Flange connection or flange joint refers to the detachable connection of flanges, gaskets and bolts as a set of combined sealing structures. So, what about the flange specifications? Next, Xiaobian gave everyone a flange specification sheet for your reference.

Flange classification method

1. According to chemical industry (HG) industry standard: integral flange (IF), threaded flange (Th), flat welded flange (PL), neck welded flange (WN), flanged flat welded flange (SO), socket welding flange (SW), butt welded ring loose flange (PJ/SE), flat welded ring loose flange (PJ/RJ), lining flange cover (BL(S)), Flange cover (BL).

2. According to the petrochemical (SH) industry standard: threaded flange (PT), welded flange (WN), flat welded flange (SO), socket welded flange (SW), loose flange (LJ) , flange cover (not table note).

3, according to the mechanical (JB) industry standards: integral flange, butt welding flange, plate type flat welding flange, butt welded ring type loose flange, flat welded ring plate loose loose flange, flange ring plate loose cover Flange, flange cover.

4, according to the national (GB) standard points: integral flange, threaded flange, butt welding flange, with neck flat welding flange, with neck socket welding flange, butt welded ring with loose collar flange, plate flat Welded flanges, butt-welded ring-type loose flanges, flat-welded ring-type loose flanges, flanging ring-type loose flanges, flange covers.

Flange specifications

DN(mm) D0 D D1 D2 fbdz kg

DN15 18 95 65 45 2 12 14 4 M12×40 M12×60 0.5

DN20 25 105 75 55 2 14 14 4 M12×50 M12×60 0.748

DN25 32 115 85 65 2 14 14 4 M12×50 M12×60 0.890

DN32 38 135 100 78 2 16 18 4 M16×60 M16×70 1.400

DN40 45 145 110 85 3 18 18 4 M16×60 M16×80 1.710

DN50 57 160 125 100 3 18 18 4 M16×60 M16×80 2.090

DN65 76 180 145 120 3 18 18 4 M16×60 M16×80 2.840

DN80 89 195 160 135 3 20 18 4 M16×60 M16×80 3.240

DN100 108 215 180 155 3 20 18 8 M16×70 M16×90 4.010

DN125 133 245 210 185 3 22 18 8 M16×70 M16×90 5.400

DN150 159 280 240 210 3 24 23 8 M20×80 M20×100 6.120

DN200 219 335 295 265 3 24 23 8 M20×80 M20×100 8.240

DN250 273 390 350 320 3 26 23 12 M20×80 M20×100 10.700

DN300 326 440 400 366 4 28 23 12 M20×80 M20×100 12.900

DN350 377 600 460 428 4 28 23 16 M20×80 M20×100 15.900

DN400 426 565 515 482 4 30 25 16 M22×90 M22×110 21.800

DN450 478 615 565 532 4 30 25 20 M22×90 M20×110 24.400

DN500 529 670 620 585 4 32 25 20 M22×90 M22×120 27.700

DN600 630 780 725 685 5 36 30 20 M27×110 M27×130 39.400

DN700 720 895 840 800 5 36 30 24 65.000

DN800 820 1010 950 905 5 38 34 24 77.000

DN900 920 1110 1050 1005 5 42 34 28 86.000

DN1000 1020 1220 1160 1115 5 44 34 28 106.000

DN1200 1220 1450 1380 1325 5 48 41 32 155.000

DN1400 1420 1675 1590 1525 5 54 48 36 221.000

DN1600 1620 1915 1820 1750 5 62 54 40 335.000

DN1800 1820 2115 2020 1950 5 66 54 44 399.000

DN2000 2020 2325 2230 2160 5 72 54 46 505.000

The above is the introduction of the related content of the flange. I hope to help you. For more information on flanges, please continue to pay attention to information on this site.

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