Nominal Inside Diameters

NOM
PIPE
SIZE
NOMINAL INSIDE DIAMETERS1
OUTSIDE DIA.
O.D.
SCH. 5S 4 SCH. 10S4 SCH. 105 SCH. 205 SCH. 305 SCH. 40S4 SCH. 40S5 STD5 B16.5 SCH. 80S4 XS5 SCH. 805 SCH. 1605 XXS5
1/2 0.84 0.710 0.674 - - - 0.622 0.622 0.622 0.62 0.546 0.546 0.546 0.464 0.252
3/4 1.05 0.920 0.844 - - - 0.824 0.824 0.824 0.82 0.742 0.742 0.742 0.612 0.434
1 1.32 1.190 1.102 - - - 1.054 1.054 1.054 1.05 0.962 0.962 0.962 0.820 0.604
1 1/4 1.66 1.530 1.442 - - - 1.380 1.380 1.380 1.38 1.278 1.278 1.278 1.160 0.896
1 1/2 1.90 1.770 1.682 - - - 1.610 1.610 1.610 1.64 1.500 1.500 1.500 1.338 1.100
2 2.38 2.250 2.162 - - - 2.072 2.072 2.072 2.07 1.944 1.944 1.944 1.692 1.508
2 1/2 2.88 2.716 2.640 - - - 2.474 2.474 2.474 2.47 2.328 2.328 2.328 2.130 1.776
3 3.50 3.334 3.260 - - - 3.068 3.068 3.068 3.07 2.900 2.900 2.900 2.624 2.300
3 1/2 4.00 3.834 3.760 - - - 3.548 3.548 3.548 3.55 3.364 3.364 3.364 - -
4 4.50 4.334 4.260 - - - 4.026 4.026 4.026 4.03 3.826 3.826 3.826 3.438 3.152
5 5.56 5.342 5.292 - - - 5.044 5.044 5.044 5.05 4.810 4.810 4.810 4.310 4.060
62 6.62 6.402 6.352 - - - 6.060 6.0670 6.060 - 5.756 5.756 5.756 5.182 4.892
63 6.63 6.412 6.362 - - - 6.070 6.070 6.070 6.07 5.766 5.766 5.766 5.192 4.902
82 8.62 8.402 8.324 - 8.120 8.066 7.976 7.976 7.976 - 7.620 7.620 7.620 6.808 6.870
83 8.63 8.412 8.334 - 8.130 8.076 7.986 7.986 7.986 7.98 7.630 7.630 7.630 6.818 6.880
10 10.75 17.482 10.420 - 10.250 10.136 10.020 10.020 10.020 10.02 9.750 9.750 9.562 8.500 8.750
12 12.75 12.438 12.390 - 12.250 12.090 12.00 11.938 12.000 12.00 11.750 11.750 11.374 10.126 10.750
14 14.00 13.688 13.624 13.500 13.376 13.250 - 13.124 13.250 - - 13.000 12.500 11.188 -
16 16.00 15.670 15.624 15.500 15.376 15.250 - 15.000 15.250 - - 15.000 14.312 12.812 -
18 18.00 17.670 17.624 17.500 17.376 17.124 - 16.876 17.250 - - 17.000 16.124 14.438 -
20 20.00 19.624 19.564 19.500 19.250 19.000 - 18.812 19.250 - - 19.000 17.938 16.062 -
22 22.00 21.624 21.564 21.500 21.250 21.000 - - 21.250 - - 21.000 19.750 17.750 -
24 24.00 23.564 23.500 23.500 23.250 22.876 - 22.624 23.250 - - 23.000 21.562 19.312 -

ALL DIMENSIONS ARE IN INCHES
1 APPLICABLE TO FITTINGS, WELD NECK FLANGES, AND BORE OF SOCKET WELD FLANGES
2 - B16.9 (FITTINGS)
3 - B16.5 (FLANGES)
4 - B36.19 (STAINLESS STEEL PIPE)
5 - B36.10 (WELDED AND SEAMLESS WROUGHT STEEL PIPE)

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