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ansi 400 flange dimensions, ansi 400 flange pressure rating, ansi b16.5 class 400 flange dimensions, ansi 400 flange, ansi class 400 flange dimensions

ansi 400 flange dimensions, ansi 400 flange pressure rating

ansi 400 flange dimensions, ansi 400 flange pressure rating, ansi b16.5 class 400 flange dimensions, ansi 400 flange, ansi class 400 flange dimensions

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ANSI B16.5 - Steel Pipe Flanges - Maximum Pressure and Temperature Ratings - Group 1.2, Non-shock pressure (psig) and temperature ratings for steel pipe flanges and flanged fittings



Flanges and Bolt Dimensions ASME/ANSI B16.5 - Class 150 to 2500 Diameters and bolt circles for standard ASME B16.5 flanges - 1/4 to 24 inches - Class 150 to 2500
  • weld neck
  • slip-on
  • socket weld
  • threaded
  • lap joint
  • blind
  • 1 inch = 25.4 mm
Nominal Pipe Size
NPS
(inches)
Class 400
Diameter of
Flange
(inches)
No.
of
Bolts
Diameter of
Bolts
(inches)
Diameter of
Bolt Holes
(inches)
Bolt
Circle
(inches)
1/4 3-3/8 4 1/2 0.62 2-1/4
1/2 3-3/4 4 1/2 0.62 2-5/8
3/4 4-5/8 4 5/8 0.75 3-1/4
1 4-7/8 4 5/8 0.75 3-1/2
1-1/4 5-1/4 4 5/8 0.75 3-7/8
1-1/2 6-1/8 4 3/4 0.88 4-1/2
2 6-1/2 8 5/8 0.75 5
2-1/2 7-1/2 8 3/4 0.88 5-7/8
3 8-1/4 8 3/4 0.88 6-5/8
3-1/2 9 8 7/8 1 7-1/4
4 10 8 7/8 1 7-7/8
5 11 8 7/8 1 9-1/4
6 12-1/2 12 7/8 1 10-5/8
8 15 12 1 1.12 13
10 17-1/2 16 1-1/8 1.25 15-1/4
12 20-1/2 16 1-1/4 1.38 17-3/4
14 23 20 1-1/4 1.38 20-1/4
16 25-1/2 20 1-3/8 1.5 22-1/2
18 28 24 1-3/8 1.5 24-3/4
20 30-1/2 24 1-1/2 1.62 27
24 36 24 1-3/4 1.88 32

ANSI B16.5 - Steel Pipe Flanges - Maximum Pressure and Temperature Ratings - Group 1.2
Non-shock pressure (psig) and temperature ratings for steel pipe flanges and flanged fittings

Maximum allowable non-shock pressure (psig) and temperature ratings for steel pipe flanges and flanged fittings according the American National Standard ANSI B16.5 - 1988.

Maximum Allowable non-shock Pressure (psig) 
Temperature
(oF)
Pressure Class (lb)
150 300 400 600 900 1500 2500
Hydrostatic Test Pressure (psig) 
450 1125 1500 2225 3350 5575 9275
-20 to 100 290 750 1000 1500 2250 3750 6250
200 260 750 1000 1500 2250 3750 6250
300 230 730 970 1455 2185 3640 6070
400 200 705 940 1405 2110 3520 5865
500 170 665 885 1330 1995 3325 5540
600 140 605 805 1210 1815 3025 5040
650 125 590 785 1175 1765 2940 4905
700 110 555 740 1110 1665 2775 4630
750 95 505 675 1015 1520 2535 4230
800 80 410 550 825 1235 2055 3430
850 65 320 425 640 955 1595 2655
900 50 225 295 445 670 1115 1855
950 35 135 185 275 410 685 1145
1000 20 85 115 170 255 430 715

Flange Dimensions :

ansi 400 flange dimensions, ansi 400 flange pressure rating, ansi b16.5 class 400 flange dimensions, ansi 400 flange, ansi class 400 flange dimensions

ansi 400 flange dimensions, ansi 400 flange pressure rating, ansi b16.5 class 400 flange dimensions, ansi 400 flange, ansi class 400 flange dimensions
ansi 400 flange dimensions, ansi 400 flange pressure rating, ansi b16.5 class 400 flange dimensions, ansi 400 flange, ansi class 400 flange dimensions

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