• Manufactured to ASTM A182 ANSI B.16.5
  • Available in 150lb, 300lb and 600lb classes

Three types available:

  • SORF - Slip on raised face
  • WNRF - Weld neck raised face
  • BRF - Blind raised face

Jump to ANSI Flange Dimensions

● Stocked Item ○ Market Available

GradeSize N.BSlip On Raised Face
  150lbWgt300lbWgt
    FL1S304   -  
304L 15 0.5 0.7
  20 0.7 1.1
  25 0.9 1.4
  32 1.1 2.1
  40 1.4 3
  50 2.3 3.2
  65 3.2 4.6
  80 3.6 5.9
  100 5.9 10.5
  125 6.8 13.2
  150 8 16.3
  200 12.8 25
  250 18 35
  300 27.7 51
           
  350 37.7 72
  400 48.2 95
  450 59 115
  500 67 140
  550 72 197
  600 96 223
  650 114 247
  700 130 301
  750 143 351
  800 180 404
  850 191 454
  900 218 508
    FL1S316   FL3S316  
316L 15 0.5 0.7
  20 0.7 1.1
  25 0.9 1.4
  32 1.1 2.1
  40 1.4 3
  50 2.3 3.2
  65 3.2 4.6
  80 3.6 5.9
  100 5.9 10.5
  125 6.8 13.2
  150 8 16.3
  200 12.8 25
  250 18 35
  300 27.7 51
           
  350 37.7 72
  400 48.2 95
  450 59 115
  500 67 140
  550 72 197
  600 96 223
  650 114 247
  700 130 301
  750 143 351
  800 180 404
  850 191 454
  900 218 508

 

GradeSize N.BWeld Neck Raised Face
  10S 150lb40S 150lbWgt300lbWgt
    FL1W304L1 FL1W304L4    
304L 15 0.9 0.9
  20 0.9 1.4
  25 1.4 1.8
  32 1.4 2.3
  40 1.8 3.2
  50 2.7 3.6
  65 4.6 5.5
  80 5.2 6.9
  100 7.8 12.1
  125 9.6 16.4
  150 12.5 21.1
  200 19.9 31.4
  250 24.6 44
  300 40 65
      STD      
  350 52 94
  400 65 113
  450 76 139
  500 90 168
  550 102 195
  600 123 236
  650 136 267
  700 151 322
  750 164 375
  800 198 431
  850 211 490
  900 236 545
    FL1W316L1 FL1W316L4 -  
316L 15 0.9 0.9
  20 0.9 1.4
  25 1.4 1.8
  32 1.4 2.3
  40 1.8 3.2
  50 2.7 3.6
  65 4.6 5.5
  80 5.2 6.9
  100 7.8 12.1
  125 9.6 16.4
  150 12.5 21.1
  200 19.9 31.4
  250 24.6 44
  300 40 65
      STD      
  350 52 94
  400 65 113
  450 76 139
  500 90 168
  550 102 195
  600 123 236
  650 136 267
  700 151 322
  750 164 375
  800 198 431
  850 211 490
  900 236 545

 

GradeSize N.BBlind Raised Face
  150lbWgt300lbWgt
    FL1B304   -  
304L 15 0.9 0.9
  20 0.9 1.4
  25 0.9 1.8
  32 1.4 2.7
  40 1.8 3.2
  50 2.3 3.6
  65 3.2 5.5
  80 4.1 7.3
  100 7.7 12.7
  125 9.1 16.8
  150 12 21.8
  200 21.4 35.9
  250 30.5 55
  300 50 83
           
  350 63 110
  400 85 143
  450 99 188
  500 129 234
  550 151 270
  600 190 364
  650 226 432
  700 265 534
  750 314 638
  800 378 755
  850 425 863
  900 485 978
    FL1B316   FL3B316  
316L 15 0.9 0.9
  20 0.9 1.4
  25 0.9 1.8
  32 1.4 2.7
  40 1.8 3.2
  50 2.3 3.6
  65 3.2 5.5
  80 4.1 7.3
  100 7.7 12.7
  125 9.1 16.8
  150 12 21.8
  200 21.4 35.9
  250 30.5 55
  300 50 83
           
  350 63 110
  400 85 143
  450 99 188
  500 129 234
  550 151 270
  600 190 364
  650 226 432
  700 265 534
  750 314 638
  800 378 755
  850 425 863
  900 485 978

 

ANSI Flange Dimensions

 

Blind Flange

SizeO.D. Thickness Raised Raised
 of of Face Face
 FlangeFlangeThickDia
   ness 
 BCDE
150 15 89.0 11.1 1.6 35
  20 98.5 12.8 1.6 42.9
  25 108.0 14.3 1.6 50.9
  32 117.5 15.9 1.6 63.6
  40 127.1 17.5 1.6 73.1
  50 152.5 19.1 1.6 92.0
  65 177.9 22.3 1.6 104.8
  80 190.6 23.8 1.6 127.1
  90 216.0 23.8 1.6 139.8
  100 228.7 23.8 1.6 157.2
  125 254.1 23.8 1.6 185.8
  150 279.5 25.5 1.6 216.0
  200 343.0 28.6 1.6 269.9
  250 406.5 30.2 1.6 323.9
  300 482.7 31.8 1.6 381.1
  350 533.5 35.0 1.6 412.8
  400 597.0 36.5 1.6 470.0
  450 635.1 39.7 1.6 533.5
  500 698.6 42.9 1.6 584.3
  600 812.9 47.7 1.6 692.2
300 15 95.3 14.3 1.6 35.0
  20 117.5 15.9 1.6 42.9
  25 123.9 17.5 1.6 50.9
  32 133.4 19.1 1.6 63.6
  40 155.6 20.7 1.6 73.1
  50 165.2 22.3 1.6 92.1
  65 190.6 25.5 1.6 104.8
  80 209.6 28.6 1.6 127.1
  90 228.7 30.2 1.6 139.8
  100 254.1 31.8 1.6 157.2
  125 279.5 35.0 1.6 185.8
  150 317.6 36.5 1.6 216.0
  200 381.1 41.3 1.6 269.9
  250 444.6 47.7 1.6 323.9
  300 520.8 50.9 1.6 381.1
  350 584.3 54.0 1.6 412.8
  400 647.8 57.2 1.6 470.0
  450 711.3 60.4 1.6 533.5
  500 774.8 63.6 1.6 584.3
  600 914.5 69.9 1.6 692.2
600 15 95.3 14.3 6.4 35.0
  20 117.5 15.9 6.4 42.9
  25 123.9 17.5 6.4 50.9
  32 133.4 20.7 6.4 63.6
  40 155.6 22.3 6.4 73.1
  50 165.2 25.5 6.4 92.1
  65 190.6 28.6 6.4 104.8
  80 209.6 31.8 6.4 127.1
  90 228.7 35.0 6.4 139.8
  100 273.1 38.2 6.4 157.2
  125 330.3 44..5 6.4 185.8
  150 355.7 47.7 6.4 216.0
  200 419.2 55.6 6.4 269.9
  250 508.1 63.6 6.4 323.9
  300 558.9 66.7 6.4 381.1
  350 603.3 69.9 6.4 412.8
  400 685.9 76.3 6.4 470.0
  450 743.0 82.6 6.4 533.5
  500 812.9 89.0 6.4 584.3
  600 939.9 101.7 6.4 692.2

 

Slip On Flange

SizeSlipon O.D. THKRaised Raised Hub DiamLength/ Hub
 Boreof of Face Face Slip-On
  FlangeFlangeThickDia Weld
    ness  Neck
 ABCDEFH
150 15 22.3 89.0 11.1 1.6 35 30.2 15.9
  20 27.6 98.5 12.8 1.6 42.9 38.2 15.9
  25 34.5 108.0 14.3 1.6 50.9 49.2 17.5
  32 43.1 117.5 15.9 1.6 63.6 58.8 20.7
  40 49.5 127.1 17.5 1.6 73.1 65.1 22.3
  50 61.9 152.5 19.1 1.6 92.0 77.8 25.5
  65 74.6 177.9 22.3 1.6 104.8 90.5 28.6
  80 90.6 190.6 23.8 1.6 127.1 108.0 30.2
  90 103.3 216.0 23.8 1.6 139.8 122.3 31.8
  100 116.0 228.7 23.8 1.6 157.2 135.0 33.4
  125 143.7 254.1 23.8 1.6 185.8 163.5 36.5
  150 170.6 279.5 25.5 1.6 216.0 192.1 39.7
  200 221.4 343.0 28.6 1.6 269.9 246.1 44.5
  250 276.3 406.5 30.2 1.6 323.9 304.9 49.2
  300 327.1 482.7 31.8 1.6 381.1 365.2 55.6
  350 359.1 533.5 35.0 1.6 412.8 400.1 57.2
  400 410.4 597.0 36.5 1.6 470.0 457.3 63.6
  450 461.7 635.1 39.7 1.6 533.5 504.9 68.3
  500 513.0 698.6 42.9 1.6 584.3 558.9 73.1
  600 615.9 812.9 47.7 1.6 692.2 663.6 82.6
300 15 22.3 95.3 14.3 1.6 35.0 38.2 22.3
  20 27.6 117.5 15.9 1.6 42.9 47.7 25.5
  25 34.5 123.9 17.5 1.6 50.9 54.0 27.0
  32 43.1 133.4 19.1 1.6 63.6 63.6 27.0
  40 49.5 155.6 20.7 1.6 73.1 69.9 30.2
  50 61.9 165.2 22.3 1.6 92.1 84.2 33.4
  65 74.6 190.6 25.5 1.6 104.8 100.0 38.2
  80 90.6 209.6 28.6 1.6 127.1 117.5 42.9
  90 103.3 228.7 30.2 1.6 139.8 133.4 44.5
  100 116.0 254.1 31.8 1.6 157.2 146.1 47.7
  125 143.7 279.5 35.0 1.6 185.8 177.9 50.9
  150 170.6 317.6 36.5 1.6 216.0 206.4 52.4
  200 221.4 381.1 41.3 1.6 269.9 260.4 61.9
  250 276.3 444.6 47.7 1.6 323.9 320.7 66.7
  300 327.1 520.8 50.9 1.6 381.1 374.7 73.1
  350 359.1 584.3 54.0 1.6 412.8 425.5 76.3
  400 410.4 647.8 57.2 1.6 470.0 482.7 82.6
  450 461.7 711.3 60.4 1.6 533.5 533.5 89.0
  500 513.0 774.8 63.6 1.6 584.3 587.4 95.3
  600 615.9 914.5 69.9 1.6 692.2 701.7 106.4
600 15 22.3 95.3 14.3 6.4 35.0 38.2 22.3
  20 27.6 117.5 15.9 6.4 42.9 47.7 25.5
  25 34.5 123.9 17.5 6.4 50.9 34.5 27.0
  32 43.1 133.4 20.7 6.4 63.6 63.6 28.6
  40 49.5 155.6 22.3 6.4 73.1 69.9 31.8
  50 61.9 165.2 25.5 6.4 92.1 84.2 36.5
  65 74.6 190.6 28.6 6.4 104.8 100.0 41.3
  80 90.6 209.6 31.8 6.4 127.1 117.5 46.1
  90 103.3 228.7 35.0 6.4 139.8 133.4 49.2
  100 116.0 273.1 38.2 6.4 157.2 152.5 54.0
  125 143.7 330.3 44..5 6.4 185.8 188.9 60.4
  150 170.6 355.7 47.7 6.4 216.0 222.3 66.7
  200 221.4 419.2 55.6 6.4 269.9 273.10 76.3
  250 276.3 508.1 63.6 6.4 323.9 343.0 85.8
  300 327.1 558.9 66.7 6.4 381.1 400.1 92.1
  350 359.1 603.3 69.9 6.4 412.8 431.9 93.7
  400 410.4 685.9 76.3 6.4 470.0 495.4 106.4
  450 461.7 743.0 82.6 6.4 533.5 546.2 117.5
  500 513.0 812.9 89.0 6.4 584.3 609.70 127.1
  600 615.9 939.9 101.7 6.4 692.2 717.6 139.8

 

Welding Neck Flange

SizeO.D. THK Raised Raised Hub DiamHub Diam Length/ Hub
 of of Face Face of ChamferSlip-On
 FlangeFlangeThickDia W. NeckWeld
   ness   Neck
 BCDEFGJ
150 15 89.0 11.1 1.6 35 30.2 21.4 47.7
  20 98.5 12.8 1.6 42.9 38.2 26.7 52.4
  25 108.0 14.3 1.6 50.9 49.2 33.6 55.6
  32 117.5 15.9 1.6 63.6 58.8 42.2 57.2
  40 127.1 17.5 1.6 73.1 65.1 48.3 61.9
  50 152.5 19.1 1.6 92.0 77.8 60.5 63.6
  65 177.9 22.3 1.6 104.8 90.5 73.2 69.9
  80 190.6 23.8 1.6 127.1 108.0 89.0 69.9
  90 216.0 23.8 1.6 139.8 122.3 101.7 71.5
  100 228.7 23.8 1.6 157.2 135.0 114.4 76.3
  125 254.1 23.8 1.6 185.8 163.5 141.3 89.0
  150 279.5 25.5 1.6 216.0 192.1 168.5 89.0
  200 343.0 28.6 1.6 269.9 246.1 219.3 101.7
  250 406.5 30.2 1.6 323.9 304.9 273.1 101.7
  300 482.7 31.8 1.6 381.1 365.2 323.9 114.4
  350 533.5 35.0 1.6 412.8 400.1 355.7 127.1
  400 597.0 36.5 1.6 470.0 457.3 406.5 127.1
  450 635.1 39.7 1.6 533.5 504.9 457.3 139.8
  500 698.6 42.9 1.6 584.3 558.9 508.1 144.5
  600 812.9 47.7 1.6 692.2 663.6 609.7 152.5
300 15 95.3 14.3 1.6 35.0 38.2 21.4 52.4
  20 117.5 15.9 1.6 42.9 47.7 26.7 57.2
  25 123.9 17.5 1.6 50.9 54.0 33.6 61.9
  32 133.4 19.1 1.6 63.6 63.6 42.2 65.1
  40 155.6 20.7 1.6 73.1 69.9 48.3 68.3
  50 165.2 22.3 1.6 92.1 84.2 60.5 69.9
  65 190.6 25.5 1.6 104.8 100.0 73.2 76.3
  80 209.6 28.6 1.6 127.1 117.5 89.0 79.4
  90 228.7 30.2 1.6 139.8 133.4 101.7 81.0
  100 254.1 31.8 1.6 157.2 146.1 114.4 85.8
  125 279.5 35.0 1.6 185.8 177.9 141.3 98.5
  150 317.6 36.5 1.6 216.0 206.4 168.5 98.5
  200 381.1 41.3 1.6 269.9 260.4 219.3 111.2
  250 444.6 47.7 1.6 323.9 320.7 273.1 117.5
  300 520.8 50.9 1.6 381.1 374.7 323.9 130.2
  350 584.3 54.0 1.6 412.8 425.5 355.7 142.9
  400 647.8 57.2 1.6 470.0 482.7 406.5 146.1
  450 711.3 60.4 1.6 533.5 533.5 457.3 158.8
  500 774.8 63.6 1.6 584.3 587.4 508.1 162.0
  600 914.5 69.9 1.6 692.2 701.7 609.7 168.3
600 15 95.3 14.3 6.4 35.0 38.2 21.4 52.4
  20 117.5 15.9 6.4 42.9 47.7 26.7 57.2
  25 123.9 17.5 6.4 50.9 34.5 33.6 61.9
  32 133.4 20.7 6.4 63.6 63.6 42.2 66.7
  40 155.6 22.3 6.4 73.1 69.9 48.3 69.9
  50 165.2 25.5 6.4 92.1 84.2 60.5 73.1
  65 190.6 28.6 6.4 104.8 100.0 73.2 79.4
  80 209.6 31.8 6.4 127.1 117.5 89.0 82.6
  90 228.7 35.0 6.4 139.8 133.4 101.7 85.8
  100 273.1 38.2 6.4 157.2 152.5 114.4 101.7
  125 330.3 44..5 6.4 185.8 188.9 141.3 114.4
  150 355.7 47.7 6.4 216.0 222.3 168.5 117.5
  200 419.2 55.6 6.4 269.9 273.10 219.3 133.4
  250 508.1 63.6 6.4 323.9 343.0 273.1 152.5
  300 558.9 66.7 6.4 381.1 400.1 323.9 155.6
  350 603.3 69.9 6.4 412.8 431.9 355.7 165.2
  400 685.9 76.3 6.4 470.0 495.4 406.5 177.9
  450 743.0 82.6 6.4 533.5 546.2 457.3 184.2
  500 812.9 89.0 6.4 584.3 609.70 508.1 190.6
  600 939.9 101.7 6.4 692.2 717.6 609.7 203.3

 

 

Bolt Dimension

SizeBolt Bolt Number of
 Circle HoleBolt
 DiamDiamHoles
 KLM
150 15 60.3 15.8 4
  20 69.8 15.8 4
  25 79.3 15.8 4
  32 88.9 15.8 4
  40 98.4 15.8 4
  50 120.6 19.0 4
  65 139.7 19.0 4
  80 152.4 19.0 4
  90 177.8 19.0 8
  100 190.5 19.0 8
  125 215.9 22.2 8
  150 241.3 22.2 8
  200 298.4 22.2 8
  250 361.9 25.4 12
  300 431.8 25.4 12
  350 476.2 28.5 12
  400 539.7 28.5 16
  450 577.8 31.7 16
  500 635.0 31.7 20
  600 749.3 34.9 20
300 15 66.6 15.8 4
  20 82.5 19.0 4
  25 88.9 19.0 4
  32 98.4 19.0 4
  40 114.3 22.2 4
  50 127.0 19.0 8
  65 149.2 22.2 8
  80 168.2 22.2 8
  90 184.1 22.2 8
  100 200.0 22.2 8
  125 234.9 22.2 8
  150 269.8 22.2 12
  200 330.2 25.4 12
  250 387.3 28.5 16
  300 450.8 31.7 16
  350 514.3 31.7 20
  400 571.5 34.9 20
  450 628.6 34.9 24
  500 685.8 34.9 24
  600 812.8 41.2 24
600 15 66.6 15.8 4
  20 82.5 19.0 4
  25 88.9 19.0 4
  23 98.4 19.0 4
  40 114.3 22.2 4
  50 127.0 19.0 8
  65 149.3 22.2 8
  80 168.2 22.2 8
  90 184.1 25.4 8
  100 215.9 25.4 8
  125 266.7 28.5 8
  150 292.1 28.5 12
  200 349.2 31.7 12
  250 431.8 34.9 16
  300 488.9 34.9 20
  350 527.0 38.1 20
  400 603.2 41.2 20
  450 654.0 44.4 20
  500 723.9 44.4 24
  600 838.2 50.8 24