Flanges

Cross-Section

Flanges - Diagram

150lb Flange

Length through Hub Y

Nominal BorePipe OD AFlange dia. BRaised Face dia. DFlange Thickness TWelding NeckSlip-on Screwed Socket-weldBolt PCDNo. of BoltsBolt Hole dia.
1521.488.934.911.147.615.960.3415.9
2027.098.442.912.752.415.969.8415.9
2534.1107.9 50.814.3  55.6 17.5 79.4 15.9
3242.9117.563.5 15.9 57.1 20.6 88.9 15.9 
4048.4127.073.0 17.5 61.9 22.2 98.4 15.9 
5060.3152.492.1 19.0 63.5 25.4 120.6 19.0 
6573.0177.8104.8 22.2 69.8 28.6 139.7 19.0 
8088.9190.5127.0 23.8 69.8 30.2 152.4  419.0 
90101.6215.9139.7 23.8 71.4 31.7 177.8 19.0 
100114.3228.6157.2 23.8 76.2 33.3 190.5 19.0 
125141.3254.0185.7 23.8 88.9 36.5 215.9 22.2 
150165.1279.4215.925.488.939.7241.3822.2
 168.3279.4215.9 25.4 88.9 39.7 241.3 22.2 
200 219.1 342.9 269.9 28.6 101.6 44.4 298.4 22.2 
250273.1406.4323.830.2101.649.2361.91225.4
300323.9482.6381.031.7114.355.6431.81225.4
350 355.6 533.4 412.7 34.9 127.0 57.1 476.2 12 28.6 
400406.4596.9469.936.5127.063.5539.71628.6
450457.2635.0533.439.7139.768.3577.81631.7
500508698.5584.242.9144.573.0635.02031.7
600609.6812.8692.147.6152.482.5749.32034.9

Approximate Mass (kg)

Nominal Bore mmWeld NeckSocket Weld Slip-on Screwed Blind
150.790.450.57
200.860.680.91
251.090.951.09
321.411.131.25
401.811.361.70
502.832.222.77
654.423.824.04
805.224.085.44
905.444.996.35
1007.485.947.37
1259.536.129.07
15011.348.16127.0
20019.0512.7021.77
25025.4017.2431.75
30038.1027.2245.36
35051.2635.3858.97
40063.5042.1877.71
450 68.0452.62102.51
500 81.6565.32123.38
600 118.8491.63203.21

 

300lb Flange

Length through Hub Y

Nominal BorePipe OD AFlange dia. BRaised Face dia. DFlange Thickness TWelding NeckSlip-on Screwed Socket-weldBolt PCDNo. of BoltsBolt Hole dia.
1521.495.234.914.352.422.266.7415.9
2027.0117.542.915.957.125.482.6419.0
2534.1123.8 50.817.561.927.088.9 419.0
3242.9133.363.5 19.065.1 27.098.4419.0
4048.4155.673.0 20.6 68.330.2114.3419.0
5060.3165.192.1 22.269.833.3127.0819.0
6573.0190.5104.8 25.476.238.1149.2822.2
8088.9209.5127.0 28.679.442.9168.3822.2
90101.6228.6139.7 30.281.044.4184.1822.2
100114.3254.0157.2 31.785.747.6200.022.2
125141.3279.4185.7 34.998.450.8234.9822.2
150165.1317.5215.936.598.452.4269.91222.2
 168.3317.5215.9 36.598.452.4 269.91222.2
200 219.1 381.0269.9 41.3111.161.9330.21225.4
250273.1444.5323.847.6117.566.7387.31628.6
300323.9520.7381.050.8130.273.0450.81631.7
350 355.6 584.2412.7 54.0142.976.2514.32031.7
400406.4647.7469.957.1146.082.5571.52034.9
450457.2711.2533.460.3158.788.9628.62434.9
500508.0774.7584.263.5161.995.2685.82434.9
600609.6914.4692.169.8168.3106.4812.82441.3

Approximate Mass (kg)

Nominal Bore mmWeld NeckSocket Weld Slip-on Screwed Blind
15 0.910.73  0.76
201.41 1.25 1.13 
251.81 1.36 1.77 
322.27 2.04 2.68 
403.06 2.81 2.83 
503.74 3.13 3.52 
655.56 4.54 5.44 
807.37 6.12 7.26 
909.53 7.71 9.98 
10011.79 9.53 11.79 
12515.42 12.70 15.88 
15019.96 16.33 20.87 
20032.21 25.40 38.10 
25044.00 35.38 55.34 
30064.41 50.80 86.18 
35084.37 74.39 107.05 
400111.58 101.60 145.15 
450 138.35 126.10 181.89 
500 174.63 149.69 231.33 
600 247.21 222.26 342.92 

600lb Flange

Length through Hub Y

Nominal BorePipe OD AFlange dia. BRaised Face dia. DFlange Thickness TWelding NeckSlip-on Screwed Socket-weldBolt PCDNo. of BoltsBolt Hole dia.
1521.495.234.914.352.422.266.7415.9
2027.0117.542.915.957.125.482.5419.0
2534.1123.8 50.817.561.9 27.0 88.9 419.0
3242.9133.363.5 20.666.728.698.4419.0
4048.4155.673.0 22.269.831.7114.3 419.0
5060.3165.192.1 25.473.036.5127.0819.0
6573.0190.5104.8 28.679.441.3149.2822.2
8088.9209.5127.0 31.782.546.0 168.3822.2
90101.6228.6139.7 34.985.749.2 184.1825.4
100114.3273.0157.2 38.1101.654.0 215.9825.4
125141.3330.2185.7 44.4114.360.3266.7828.6
150165.1355.6215.947.6117.566.7292.11228.6
 168.3355.6215.9 47.6117.566.7 292.11228.6
200219.1 419.1269.9 55.6133.376.2349.21231.7
250273.1508.0323.863.5152.485.7431.81634.9
300323.9558.8381.066.7155.692.1488.92034.9
350 355.6 603.2412.7 69.8165.193.7527.02038.1
400406.4685.8469.976.2177.8106.4603.22041.3
450457.2742.9533.482.5184.1117.5654.02044.4
500508812.8584.288.9190.5127.0723.92444.4
600609.6939.8692.1101.6203.2139.7838.22450.8

Approximate Mass (kg)

Nominal Bore mmWeld NeckSocket Weld Slip-on Screwed Blind
150.910.820.91
201.591.471.36
251.861.701.95
322.722.182.72
403.743.363.74
504.653.974.31
656.445.496.53
808.506.808.62
9012.259.9313.15
10017.2415.4218.14
12530.8429.0330.84
15034.0234.0237.19
20052.1645.3663.05
25090.3679.83108.86
300101.6097.52133.81
350157.40117.93171.46
400209.11166.01239.04
450 217.27215.46301.64
500 312.98277.60387.82
600 443.16370.13521.63

 

Tolerances of ASA 150, 300 amd 600 Flanges to ANSI B 16.5 : 1968

Inside Diameter250 mm and under+ 0.8
 – 0
300 mm and under+ 1.6
 – 0
Outside Diameter600 mm and under± 1.6
Thickness450 mm and under+ 3.2
 – 0
500 mm and over+ 4.8
 – 0
Spot FacingSpot facing on the back of the flange shall be parallel to the flange face within± 1°
Outside Diameter of Hub 300 mm and smaller+ 2.4
 – 1.6
300 mm and over± 3.2
Total Depth450 mm and smaller+ 3.2
 – 0.8
450 mm amd over+ 4.8
 – 1.6
DrillingBolt Circle± 1.6
Bolt Spacing± 0.8
Chamfer AngelAll Sizes± 2.5°

Carbon Steel Flanges for Oil, Gas and Petro-chemical industries to ANSI B 16.5 and BS 1560 A105 Normalised.

Flange Specifications

15mm – 32mm

Flanges - 15 mm Nominal Bore Pipe Table

40mm – 80mm

Flanges - 40mm - 80mm Nominal Bore Pipe Table

100mm – 200mm 

Flanges - 100mm-200mm Nominal Bore Pipe Table

250mm – 400mm

Flanges - 250mm Nominal Bore Pipe Table