Boiler & Condenser Tubes Reference: Inches

Thickness of Wall and Birmingham Wire GA and in Millimeters
Tube20191817161514131211109876543210
OD
(Inches)
OD
(mm)
ID.91.11.21.51.71.82.12.42.83.03.43.84.24.65.25.66.06.67.27.68.6
1/212.7Min.10.710.410.09.59.18.78.17.46.66.0
Nom.10.910.610.29.89.49.08.57.97.26.6
5/815.9Min.13.913.513.112.612.211.911.310.69.89.28.47.66.75.8
Nom.14.113.713.412.912.612.211.711.010.39.89.18.47.56.7
3/419.1Min.17.116.716.315.815.415.014.413.813.012.311.610.89.89.07.76.85.74.6
Nom.17.316.916.616.115.715.414.814.213.513.012.211.510.79.98.77.97.05.9
7/822.2Min.20.219.919.519.018.618.217.616.916.215.514.713.913.012.210.99.98.97.7
Nom.20.420.119.719.318.918.618.017.416.716.115.414.713.813.111.911.010.19.1
125.4Min.23.423.122.722.221.821.420.820.119.318.717.917.116.215.314.013.112.110.99.58.66.4
Nom.23.623.322.922.522.121.721.220.619.919.318.617.917.016.315.114.213.312.211.010.28.1
1-1/828.6Min.26.626.225.825.324.924.624.023.322.521.921.120.319.418.517.216.315.314.112.711.89.6
Nom.26.826.426.125.625.324.924.423.723.022.521.821.120.219.418.317.416.515.414.113.311.3
1-1/431.8Min.29.829.429.028.528.127.727.126.425.725.024.323.522.521.720.419.518.417.315.915.012.8
Nom.30.029.629.328.828.428.127.526.926.225.724.924.223.422.621.420.619.718.617.316.514.5
1-3/834.9Min.32.932.632.231.731.330.930.329.628.928.227.526.625.724.923.622.621.620.419.118.215.9
Nom.33.132.832.432.031.631.330.730.129.428.828.127.426.525.824.623.722.821.820.519.717.7
1-1/238.1Min.36.135.835.434.834.534.133.532.832.031.430.629.828.928.026.725.824.823.622.221.319.1
Nom.36.336.235.635.234.834.433.933.332.632.031.330.629.729.027.826.926.024.923.722.920.8
1-3/444.5Min.42.542.141.741.240.840.439.839.138.437.737.036.235.234.433.132.231.130.028.627.725.5
Nom.42.742.342.041.541.140.840.239.638.938.437.636.936.135.334.133.332.431.330.029.227.2
250.8Min.48.848.548.147.547.246.846.245.544.744.143.342.541.640.739.438.537.536.334.934.031.8
Nom.49.048.748.347.947.547.146.646.045.344.744.043.342.441.740.539.638.737.636.435.633.5
2-1/457.2Min.55.254.854.453.953.553.152.551.851.150.449.748.947.947.145.844.943.842.741.340.438.2
Nom.55.455.054.754.253.853.552.952.351.651.150.349.648.848.046.846.045.144.042.741.939.9
2-1/263.5Min.61.561.260.860.259.959.558.958.257.456.856.055.254.353.452.151.250.249.047.646.744.5
Nom.61.761.461.060.660.259.859.358.758.057.456.756.055.154.453.252.351.450.349.148.346.2
2-3/469.9Min.67.967.567.166.666.265.865.264.563.863.162.461.660.659.858.557.656.555.454.053.150.9
Nom.68.167.767.466.966.566.265.665.064.363.863.062.361.560.759.558.757.856.755.454.652.6
376.2Min.74.273.973.572.972.672.271.670.970.169.568.767.967.066.164.863.962.961.760.359.457.2
Nom.74.474.173.773.372.972.572.071.470.770.169.468.767.867.165.965.064.163.061.861.058.9
3-1/482.6Min.80.680.279.879.378.978.577.977.276.575.875.174.373.372.571.270.369.268.166.765.863.6
Nom.80.880.480.179.679.278.978.377.777.076.575.775.074.273.472.271.470.569.468.167.365.3
3-1/288.9Min.86.986.686.285.685.384.984.383.682.882.281.480.679.778.877.576.675.674.473.072.169.9
Nom.87.186.886.486.085.685.284.784.183.482.882.181.480.579.878.677.776.875.774.573.771.6
3-3/495.3Min.93.392.992.592.091.691.290.689.989.288.587.887.086.085.283.983.081.980.879.478.576.3
Nom.93.593.192.892.391.991.691.090.489.789.288.487.786.986.184.984.183.282.180.880.078.0
4101.6Min.99.699.398.998.398.097.697.096.395.594.994.193.392.491.590.289.388.387.185.784.882.6
Nom.99.899.599.198.798.397.997.496.896.195.594.894.193.292.591.390.489.588.487.286.484.3
4-1/2114.3Min.112.3112.0111.6111.0110.7110.3109.7109.0108.2107.6106.8106.0105.1104.2102.9102.0101.099.898.497.595.3
Nom.112.5112.2111.8111.4111.0110.6110.1109.5108.8108.2107.5106.8105.9105.2104.0103.1102.2101.199.999.197.0
5127.0Min.125.0124.7124.3123.7123.4123.0122.4121.7120.9120.3119.5118.7117.8116.9115.6114.7113.7112.5111.1110.2108.0
Nom.125.2124.9124.5124.1123.7123.3122.8122.2121.5120.9120.2119.5118.6117.9116.7115.8114.9113.8112.6111.8109.7