{
 "meta": {
  "title": "Pipe Size Chart (NPS)",
  "rows": 23,
  "sources": [
   "ASME B36.10M (welded & seamless wrought steel pipe)",
   "ASTM D1785 (PVC Sch 40/80)"
  ],
  "derived": "ID = OD - 2 x wall; flow area = pi x (ID/2)^2; weight = metal cross-section x 12in x 0.2836 lb/in^3",
  "key_fact": {
   "sch80_vs_sch40_avg_id_reduction_pct": 7.4,
   "sch80_vs_sch40_avg_flow_reduction_pct": 14.1,
   "note": "Schedule 80 reduces ID by ~7.4% but flow AREA by ~14.1% \u2014 the area penalty is roughly double the diameter penalty. Confusing the two is a common error."
  },
  "note": "NPS is a dimensionless designator: only 14in and above have OD equal to the nominal number."
 },
 "columns": [
  "nps",
  "schedule",
  "od_in",
  "wall_in",
  "id_in",
  "flow_area_sqin",
  "lb_per_ft"
 ],
 "rows": [
  {
   "nps": "1/8",
   "schedule": "Sch 10",
   "od_in": 0.405,
   "wall_in": 0.049,
   "id_in": 0.307,
   "flow_area_sqin": 0.074,
   "lb_per_ft": 0.187
  },
  {
   "nps": "1/8",
   "schedule": "Sch 40",
   "od_in": 0.405,
   "wall_in": 0.068,
   "id_in": 0.269,
   "flow_area_sqin": 0.0568,
   "lb_per_ft": 0.245
  },
  {
   "nps": "1/8",
   "schedule": "Sch 80",
   "od_in": 0.405,
   "wall_in": 0.095,
   "id_in": 0.215,
   "flow_area_sqin": 0.0363,
   "lb_per_ft": 0.315
  },
  {
   "nps": "1/4",
   "schedule": "Sch 10",
   "od_in": 0.54,
   "wall_in": 0.065,
   "id_in": 0.41,
   "flow_area_sqin": 0.132,
   "lb_per_ft": 0.33
  },
  {
   "nps": "1/4",
   "schedule": "Sch 40",
   "od_in": 0.54,
   "wall_in": 0.088,
   "id_in": 0.364,
   "flow_area_sqin": 0.1041,
   "lb_per_ft": 0.425
  },
  {
   "nps": "1/4",
   "schedule": "Sch 80",
   "od_in": 0.54,
   "wall_in": 0.119,
   "id_in": 0.302,
   "flow_area_sqin": 0.0716,
   "lb_per_ft": 0.536
  },
  {
   "nps": "3/8",
   "schedule": "Sch 10",
   "od_in": 0.675,
   "wall_in": 0.065,
   "id_in": 0.545,
   "flow_area_sqin": 0.2333,
   "lb_per_ft": 0.424
  },
  {
   "nps": "3/8",
   "schedule": "Sch 40",
   "od_in": 0.675,
   "wall_in": 0.091,
   "id_in": 0.493,
   "flow_area_sqin": 0.1909,
   "lb_per_ft": 0.568
  },
  {
   "nps": "3/8",
   "schedule": "Sch 80",
   "od_in": 0.675,
   "wall_in": 0.126,
   "id_in": 0.423,
   "flow_area_sqin": 0.1405,
   "lb_per_ft": 0.74
  },
  {
   "nps": "1/2",
   "schedule": "Sch 10",
   "od_in": 0.84,
   "wall_in": 0.083,
   "id_in": 0.674,
   "flow_area_sqin": 0.3568,
   "lb_per_ft": 0.672
  },
  {
   "nps": "1/2",
   "schedule": "Sch 40",
   "od_in": 0.84,
   "wall_in": 0.109,
   "id_in": 0.622,
   "flow_area_sqin": 0.3039,
   "lb_per_ft": 0.852
  },
  {
   "nps": "1/2",
   "schedule": "Sch 80",
   "od_in": 0.84,
   "wall_in": 0.147,
   "id_in": 0.546,
   "flow_area_sqin": 0.2341,
   "lb_per_ft": 1.089
  },
  {
   "nps": "1/2",
   "schedule": "Sch 160",
   "od_in": 0.84,
   "wall_in": 0.188,
   "id_in": 0.464,
   "flow_area_sqin": 0.1691,
   "lb_per_ft": 1.311
  },
  {
   "nps": "3/4",
   "schedule": "Sch 10",
   "od_in": 1.05,
   "wall_in": 0.083,
   "id_in": 0.884,
   "flow_area_sqin": 0.6138,
   "lb_per_ft": 0.858
  },
  {
   "nps": "3/4",
   "schedule": "Sch 40",
   "od_in": 1.05,
   "wall_in": 0.113,
   "id_in": 0.824,
   "flow_area_sqin": 0.5333,
   "lb_per_ft": 1.132
  },
  {
   "nps": "3/4",
   "schedule": "Sch 80",
   "od_in": 1.05,
   "wall_in": 0.154,
   "id_in": 0.742,
   "flow_area_sqin": 0.4324,
   "lb_per_ft": 1.475
  },
  {
   "nps": "3/4",
   "schedule": "Sch 160",
   "od_in": 1.05,
   "wall_in": 0.219,
   "id_in": 0.612,
   "flow_area_sqin": 0.2942,
   "lb_per_ft": 1.946
  },
  {
   "nps": "1",
   "schedule": "Sch 10",
   "od_in": 1.315,
   "wall_in": 0.109,
   "id_in": 1.097,
   "flow_area_sqin": 0.9452,
   "lb_per_ft": 1.405
  },
  {
   "nps": "1",
   "schedule": "Sch 40",
   "od_in": 1.315,
   "wall_in": 0.133,
   "id_in": 1.049,
   "flow_area_sqin": 0.8643,
   "lb_per_ft": 1.681
  },
  {
   "nps": "1",
   "schedule": "Sch 80",
   "od_in": 1.315,
   "wall_in": 0.179,
   "id_in": 0.957,
   "flow_area_sqin": 0.7193,
   "lb_per_ft": 2.174
  },
  {
   "nps": "1",
   "schedule": "Sch 160",
   "od_in": 1.315,
   "wall_in": 0.25,
   "id_in": 0.815,
   "flow_area_sqin": 0.5217,
   "lb_per_ft": 2.847
  },
  {
   "nps": "1-1/4",
   "schedule": "Sch 10",
   "od_in": 1.66,
   "wall_in": 0.109,
   "id_in": 1.442,
   "flow_area_sqin": 1.6331,
   "lb_per_ft": 1.807
  },
  {
   "nps": "1-1/4",
   "schedule": "Sch 40",
   "od_in": 1.66,
   "wall_in": 0.14,
   "id_in": 1.38,
   "flow_area_sqin": 1.4957,
   "lb_per_ft": 2.275
  },
  {
   "nps": "1-1/4",
   "schedule": "Sch 80",
   "od_in": 1.66,
   "wall_in": 0.191,
   "id_in": 1.278,
   "flow_area_sqin": 1.2828,
   "lb_per_ft": 3.0
  },
  {
   "nps": "1-1/4",
   "schedule": "Sch 160",
   "od_in": 1.66,
   "wall_in": 0.25,
   "id_in": 1.16,
   "flow_area_sqin": 1.0568,
   "lb_per_ft": 3.769
  },
  {
   "nps": "1-1/2",
   "schedule": "Sch 10",
   "od_in": 1.9,
   "wall_in": 0.109,
   "id_in": 1.682,
   "flow_area_sqin": 2.222,
   "lb_per_ft": 2.087
  },
  {
   "nps": "1-1/2",
   "schedule": "Sch 40",
   "od_in": 1.9,
   "wall_in": 0.145,
   "id_in": 1.61,
   "flow_area_sqin": 2.0358,
   "lb_per_ft": 2.721
  },
  {
   "nps": "1-1/2",
   "schedule": "Sch 80",
   "od_in": 1.9,
   "wall_in": 0.2,
   "id_in": 1.5,
   "flow_area_sqin": 1.7671,
   "lb_per_ft": 3.635
  },
  {
   "nps": "1-1/2",
   "schedule": "Sch 160",
   "od_in": 1.9,
   "wall_in": 0.281,
   "id_in": 1.338,
   "flow_area_sqin": 1.4061,
   "lb_per_ft": 4.864
  },
  {
   "nps": "2",
   "schedule": "Sch 10",
   "od_in": 2.375,
   "wall_in": 0.109,
   "id_in": 2.157,
   "flow_area_sqin": 3.6542,
   "lb_per_ft": 2.641
  },
  {
   "nps": "2",
   "schedule": "Sch 40",
   "od_in": 2.375,
   "wall_in": 0.154,
   "id_in": 2.067,
   "flow_area_sqin": 3.3556,
   "lb_per_ft": 3.657
  },
  {
   "nps": "2",
   "schedule": "Sch 80",
   "od_in": 2.375,
   "wall_in": 0.218,
   "id_in": 1.939,
   "flow_area_sqin": 2.9529,
   "lb_per_ft": 5.027
  },
  {
   "nps": "2",
   "schedule": "Sch 160",
   "od_in": 2.375,
   "wall_in": 0.344,
   "id_in": 1.687,
   "flow_area_sqin": 2.2352,
   "lb_per_ft": 7.47
  },
  {
   "nps": "2-1/2",
   "schedule": "Sch 10",
   "od_in": 2.875,
   "wall_in": 0.12,
   "id_in": 2.635,
   "flow_area_sqin": 5.4532,
   "lb_per_ft": 3.535
  },
  {
   "nps": "2-1/2",
   "schedule": "Sch 40",
   "od_in": 2.875,
   "wall_in": 0.203,
   "id_in": 2.469,
   "flow_area_sqin": 4.7878,
   "lb_per_ft": 5.799
  },
  {
   "nps": "2-1/2",
   "schedule": "Sch 80",
   "od_in": 2.875,
   "wall_in": 0.276,
   "id_in": 2.323,
   "flow_area_sqin": 4.2383,
   "lb_per_ft": 7.669
  },
  {
   "nps": "2-1/2",
   "schedule": "Sch 160",
   "od_in": 2.875,
   "wall_in": 0.375,
   "id_in": 2.125,
   "flow_area_sqin": 3.5466,
   "lb_per_ft": 10.023
  },
  {
   "nps": "3",
   "schedule": "Sch 10",
   "od_in": 3.5,
   "wall_in": 0.12,
   "id_in": 3.26,
   "flow_area_sqin": 8.3469,
   "lb_per_ft": 4.336
  },
  {
   "nps": "3",
   "schedule": "Sch 40",
   "od_in": 3.5,
   "wall_in": 0.216,
   "id_in": 3.068,
   "flow_area_sqin": 7.3927,
   "lb_per_ft": 7.584
  },
  {
   "nps": "3",
   "schedule": "Sch 80",
   "od_in": 3.5,
   "wall_in": 0.3,
   "id_in": 2.9,
   "flow_area_sqin": 6.6052,
   "lb_per_ft": 10.264
  },
  {
   "nps": "3",
   "schedule": "Sch 160",
   "od_in": 3.5,
   "wall_in": 0.438,
   "id_in": 2.624,
   "flow_area_sqin": 5.4078,
   "lb_per_ft": 14.339
  },
  {
   "nps": "3-1/2",
   "schedule": "Sch 10",
   "od_in": 4.0,
   "wall_in": 0.12,
   "id_in": 3.76,
   "flow_area_sqin": 11.1036,
   "lb_per_ft": 4.978
  },
  {
   "nps": "3-1/2",
   "schedule": "Sch 40",
   "od_in": 4.0,
   "wall_in": 0.226,
   "id_in": 3.548,
   "flow_area_sqin": 9.8868,
   "lb_per_ft": 9.119
  },
  {
   "nps": "3-1/2",
   "schedule": "Sch 80",
   "od_in": 4.0,
   "wall_in": 0.318,
   "id_in": 3.364,
   "flow_area_sqin": 8.888,
   "lb_per_ft": 12.518
  },
  {
   "nps": "4",
   "schedule": "Sch 10",
   "od_in": 4.5,
   "wall_in": 0.12,
   "id_in": 4.26,
   "flow_area_sqin": 14.2531,
   "lb_per_ft": 5.619
  },
  {
   "nps": "4",
   "schedule": "Sch 40",
   "od_in": 4.5,
   "wall_in": 0.237,
   "id_in": 4.026,
   "flow_area_sqin": 12.7303,
   "lb_per_ft": 10.802
  },
  {
   "nps": "4",
   "schedule": "Sch 80",
   "od_in": 4.5,
   "wall_in": 0.337,
   "id_in": 3.826,
   "flow_area_sqin": 11.4969,
   "lb_per_ft": 14.999
  },
  {
   "nps": "4",
   "schedule": "Sch 160",
   "od_in": 4.5,
   "wall_in": 0.531,
   "id_in": 3.438,
   "flow_area_sqin": 9.2833,
   "lb_per_ft": 22.533
  },
  {
   "nps": "5",
   "schedule": "Sch 10",
   "od_in": 5.563,
   "wall_in": 0.134,
   "id_in": 5.295,
   "flow_area_sqin": 22.0202,
   "lb_per_ft": 7.778
  },
  {
   "nps": "5",
   "schedule": "Sch 40",
   "od_in": 5.563,
   "wall_in": 0.258,
   "id_in": 5.047,
   "flow_area_sqin": 20.0058,
   "lb_per_ft": 14.633
  },
  {
   "nps": "5",
   "schedule": "Sch 80",
   "od_in": 5.563,
   "wall_in": 0.375,
   "id_in": 4.813,
   "flow_area_sqin": 18.1937,
   "lb_per_ft": 20.8
  },
  {
   "nps": "5",
   "schedule": "Sch 160",
   "od_in": 5.563,
   "wall_in": 0.625,
   "id_in": 4.313,
   "flow_area_sqin": 14.61,
   "lb_per_ft": 32.997
  },
  {
   "nps": "6",
   "schedule": "Sch 10",
   "od_in": 6.625,
   "wall_in": 0.134,
   "id_in": 6.357,
   "flow_area_sqin": 31.7391,
   "lb_per_ft": 9.299
  },
  {
   "nps": "6",
   "schedule": "Sch 40",
   "od_in": 6.625,
   "wall_in": 0.28,
   "id_in": 6.065,
   "flow_area_sqin": 28.8903,
   "lb_per_ft": 18.994
  },
  {
   "nps": "6",
   "schedule": "Sch 80",
   "od_in": 6.625,
   "wall_in": 0.432,
   "id_in": 5.761,
   "flow_area_sqin": 26.0667,
   "lb_per_ft": 28.604
  },
  {
   "nps": "6",
   "schedule": "Sch 160",
   "od_in": 6.625,
   "wall_in": 0.719,
   "id_in": 5.187,
   "flow_area_sqin": 21.1311,
   "lb_per_ft": 45.4
  },
  {
   "nps": "8",
   "schedule": "Sch 10",
   "od_in": 8.625,
   "wall_in": 0.148,
   "id_in": 8.329,
   "flow_area_sqin": 54.4848,
   "lb_per_ft": 13.413
  },
  {
   "nps": "8",
   "schedule": "Sch 40",
   "od_in": 8.625,
   "wall_in": 0.322,
   "id_in": 7.981,
   "flow_area_sqin": 50.027,
   "lb_per_ft": 28.584
  },
  {
   "nps": "8",
   "schedule": "Sch 80",
   "od_in": 8.625,
   "wall_in": 0.5,
   "id_in": 7.625,
   "flow_area_sqin": 45.6635,
   "lb_per_ft": 43.434
  },
  {
   "nps": "8",
   "schedule": "Sch 160",
   "od_in": 8.625,
   "wall_in": 0.906,
   "id_in": 6.813,
   "flow_area_sqin": 36.4558,
   "lb_per_ft": 74.77
  },
  {
   "nps": "10",
   "schedule": "Sch 10",
   "od_in": 10.75,
   "wall_in": 0.165,
   "id_in": 10.42,
   "flow_area_sqin": 85.2757,
   "lb_per_ft": 18.673
  },
  {
   "nps": "10",
   "schedule": "Sch 40",
   "od_in": 10.75,
   "wall_in": 0.365,
   "id_in": 10.02,
   "flow_area_sqin": 78.8543,
   "lb_per_ft": 40.526
  },
  {
   "nps": "10",
   "schedule": "Sch 80",
   "od_in": 10.75,
   "wall_in": 0.594,
   "id_in": 9.562,
   "flow_area_sqin": 71.8104,
   "lb_per_ft": 64.498
  },
  {
   "nps": "10",
   "schedule": "Sch 160",
   "od_in": 10.75,
   "wall_in": 1.125,
   "id_in": 8.5,
   "flow_area_sqin": 56.745,
   "lb_per_ft": 115.769
  },
  {
   "nps": "12",
   "schedule": "Sch 10",
   "od_in": 12.75,
   "wall_in": 0.18,
   "id_in": 12.39,
   "flow_area_sqin": 120.5681,
   "lb_per_ft": 24.191
  },
  {
   "nps": "12",
   "schedule": "Sch 40",
   "od_in": 12.75,
   "wall_in": 0.406,
   "id_in": 11.938,
   "flow_area_sqin": 111.9317,
   "lb_per_ft": 53.582
  },
  {
   "nps": "12",
   "schedule": "Sch 80",
   "od_in": 12.75,
   "wall_in": 0.688,
   "id_in": 11.374,
   "flow_area_sqin": 101.6053,
   "lb_per_ft": 88.725
  },
  {
   "nps": "12",
   "schedule": "Sch 160",
   "od_in": 12.75,
   "wall_in": 1.312,
   "id_in": 10.126,
   "flow_area_sqin": 80.5315,
   "lb_per_ft": 160.443
  },
  {
   "nps": "14",
   "schedule": "Sch 10",
   "od_in": 14.0,
   "wall_in": 0.25,
   "id_in": 13.5,
   "flow_area_sqin": 143.1388,
   "lb_per_ft": 36.752
  },
  {
   "nps": "14",
   "schedule": "Sch 40",
   "od_in": 14.0,
   "wall_in": 0.438,
   "id_in": 13.124,
   "flow_area_sqin": 135.2765,
   "lb_per_ft": 63.509
  },
  {
   "nps": "14",
   "schedule": "Sch 80",
   "od_in": 14.0,
   "wall_in": 0.75,
   "id_in": 12.5,
   "flow_area_sqin": 122.7185,
   "lb_per_ft": 106.246
  },
  {
   "nps": "16",
   "schedule": "Sch 10",
   "od_in": 16.0,
   "wall_in": 0.25,
   "id_in": 15.5,
   "flow_area_sqin": 188.6919,
   "lb_per_ft": 42.098
  },
  {
   "nps": "16",
   "schedule": "Sch 40",
   "od_in": 16.0,
   "wall_in": 0.5,
   "id_in": 15.0,
   "flow_area_sqin": 176.7146,
   "lb_per_ft": 82.859
  },
  {
   "nps": "16",
   "schedule": "Sch 80",
   "od_in": 16.0,
   "wall_in": 0.844,
   "id_in": 14.312,
   "flow_area_sqin": 160.8757,
   "lb_per_ft": 136.762
  },
  {
   "nps": "18",
   "schedule": "Sch 10",
   "od_in": 18.0,
   "wall_in": 0.25,
   "id_in": 17.5,
   "flow_area_sqin": 240.5282,
   "lb_per_ft": 47.443
  },
  {
   "nps": "18",
   "schedule": "Sch 40",
   "od_in": 18.0,
   "wall_in": 0.562,
   "id_in": 16.876,
   "flow_area_sqin": 223.6809,
   "lb_per_ft": 104.778
  },
  {
   "nps": "18",
   "schedule": "Sch 80",
   "od_in": 18.0,
   "wall_in": 0.938,
   "id_in": 16.124,
   "flow_area_sqin": 204.1905,
   "lb_per_ft": 171.108
  },
  {
   "nps": "20",
   "schedule": "Sch 10",
   "od_in": 20.0,
   "wall_in": 0.25,
   "id_in": 19.5,
   "flow_area_sqin": 298.6477,
   "lb_per_ft": 52.789
  },
  {
   "nps": "20",
   "schedule": "Sch 40",
   "od_in": 20.0,
   "wall_in": 0.594,
   "id_in": 18.812,
   "flow_area_sqin": 277.9456,
   "lb_per_ft": 123.242
  },
  {
   "nps": "20",
   "schedule": "Sch 80",
   "od_in": 20.0,
   "wall_in": 1.031,
   "id_in": 17.938,
   "flow_area_sqin": 252.719,
   "lb_per_ft": 209.093
  },
  {
   "nps": "24",
   "schedule": "Sch 10",
   "od_in": 24.0,
   "wall_in": 0.25,
   "id_in": 23.5,
   "flow_area_sqin": 433.7361,
   "lb_per_ft": 63.481
  },
  {
   "nps": "24",
   "schedule": "Sch 40",
   "od_in": 24.0,
   "wall_in": 0.688,
   "id_in": 22.624,
   "flow_area_sqin": 402.0024,
   "lb_per_ft": 171.477
  },
  {
   "nps": "24",
   "schedule": "Sch 80",
   "od_in": 24.0,
   "wall_in": 1.219,
   "id_in": 21.562,
   "flow_area_sqin": 365.1472,
   "lb_per_ft": 296.902
  }
 ]
}