Home > Tube Sizing Chart

Home > Tube Sizing Chart

Tech Steel & Materials offers Custom, Drawn and Seamless Tubing in an outside diameter (O.D.) from .125” to 5” and wall thickness (W.T.) from .030” thick. We do smaller OD’s & walls by request.

Our skilled team can work with you to get your exact specifications and develop custom tubing that will be ideal for your unique application. We manufacture custom tubing in a wide range of diameters, lengths and alloys, allowing for a truly custom result that meets or exceeds your expectations.

Nominal Tube Dimensions Chart

Dimensions of tubes belong to the essential characteristics of tubes. They are measured by three main dimensions except for the length. The outside diameter (OD), inside diameter (ID) and wall thickness (WT), specified in inches or fraction of an inch.

The wall thickness (WT) of tubing can also be measured by the standard gauge from 0 (heaviest) to 24 (lightest) which correspond to a range of wall thicknesses. This chart includes outside diameter, inside diameter, wall thickness, and gauge.

Nominal Tube Dimensions / Wall Thickness Chart

>>DOWNLOAD PRINTABLE CHART<<

Tube O.D. Tube Gauge
00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Wall Thickness (Inches)
0.380 0.340 0.300 0.284 0.259 0.238 0.220 0.203 0.180 0.165 0.148 0.134 0.120 0.109 0.095 0.083 0.072 0.065 0.058 0.049 0.042 0.035 0.032 0.028 0.025 0.022
Tube I.D.
1/4″ N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.010 0.032 0.060 0.084 0.106 0.120 0.134 0.152 0.166 0.180 0.186 0.194 0.200 0.206
3/8″ N/A N/A N/A N/A N/A N/A N/A N/A 0.015 0.045 0.079 0.107 0.135 0.157 0.185 0.209 0.231 0.245 0.259 0.277 0.291 0.305 0.311 0.319 0.325 0.331
1/2″ N/A N/A N/A N/A N/A 0.024 0.060 0.094 0.140 0.170 0.204 0.232 0.260 0.282 0.310 0.334 0.356 0.370 0.384 0.402 0.416 0.430 0.436 0.444 0.450 0.456
5/8″ N/A N/A 0.025 0.057 0.107 0.149 0.185 0.219 0.265 0.295 0.329 0.357 0.385 0.407 0.435 0.459 0.481 0.495 0.509 0.527 0.541 0.555 0.561 0.569 0.575 0.581
3/4″ N/A 0.070 0.150 0.182 0.232 0.274 0.310 0.344 0.390 0.420 0.454 0.482 0.510 0.532 0.560 0.584 0.606 0.620 0.634 0.652 0.666 0.680 0.686 0.694 0.700 0.706
7/8″ 0.115 0.195 0.275 0.307 0.357 0.399 0.435 0.469 0.515 0.545 0.579 0.607 0.635 0.657 0.685 0.709 0.731 0.745 0.759 0.777 0.791 0.805 0.811 0.819 0.825 0.831
1″ 0.240 0.320 0.400 0.432 0.482 0.524 0.560 0.594 0.640 0.670 0.704 0.732 0.760 0.782 0.810 0.834 0.856 0.870 0.884 0.902 0.916 0.930 0.936 0.944 0.950 0.956
1 1/8″ 0.365 0.445 0.525 0.557 0.607 0.649 0.685 0.719 0.765 0.795 0.829 0.857 0.885 0.907 0.935 0.959 0.981 0.995 1.009 1.027 1.041 1.055 1.061 1.069 1.075 1.081
1 1/4″ 0.490 0.570 0.650 0.682 0.732 0.774 0.810 0.844 0.890 0.920 0.954 0.982 1.010 1.032 1.060 1.084 1.106 1.120 1.134 1.152 1.166 1.180 1.186 1.194 1.200 1.206
1 1/2″ 0.740 0.820 0.900 0.932 0.982 1.024 1.060 1.094 1.140 1.170 1.204 1.232 1.260 1.282 1.310 1.334 1.356 1.370 1.384 1.402 1.416 1.430 1.436 1.444 1.450 1.456
1 3/4″ 0.990 1.070 1.150 1.182 1.232 1.274 1.310 1.344 1.390 1.420 1.454 1.482 1.510 1.532 1.560 1.584 1.606 1.620 1.634 1.652 1.666 1.680 1.686 1.694 1.700 1.706
2″ 1.240 1.320 1.400 1.432 1.482 1.524 1.560 1.594 1.640 1.670 1.704 1.732 1.760 1.782 1.810 1.834 1.856 1.870 1.884 1.902 1.916 1.930 1.936 1.944 1.950 1.956
2 1/4″ 1.490 1.570 1.650 1.682 1.732 1.774 1.810 1.844 1.890 1.920 1.954 1.982 2.010 2.032 2.060 2.084 2.106 2.120 2.134 2.152 2.166 2.180 2.186 2.194 2.200 2.206
2 1/2″ 1.740 1.820 1.900 1.932 1.982 2.024 2.060 2.094 2.140 2.170 2.204 2.232 2.260 2.282 2.310 2.334 2.356 2.370 2.384 2.402 2.416 2.430 2.436 2.444 2.450 2.456
2 3/4″ 1.990 2.070 2.150 2.182 2.232 2.274 2.310 2.344 2.390 2.420 2.454 2.482 2.510 2.532 2.560 2.584 2.606 2.620 2.634 2.652 2.666 2.680 2.686 2.694 2.700 2.706
3″ 2.240 2.320 2.400 2.432 2.482 2.524 2.560 2.594 2.640 2.670 2.704 2.732 2.760 2.782 2.810 2.834 2.856 2.870 2.884 2.902 2.916 2.930 2.936 2.944 2.950 2.956
3 1/4″ 2.490 2.570 2.650 2.682 2.732 2.774 2.810 2.844 2.890 2.920 2.954 2.982 3.010 3.032 3.060 3.084 3.106 3.120 3.134 3.152 3.166 3.180 3.186 3.194 3.200 3.206
3 1/2″ 2.740 2.820 2.900 2.932 2.982 3.024 3.060 3.094 3.140 3.170 3.204 3.232 3.260 3.282 3.310 3.334 3.356 3.370 3.384 3.402 3.416 3.430 3.436 3.444 3.450 3.456
3 3/4″ 2.990 3.070 3.150 3.182 3.232 3.274 3.310 3.344 3.390 3.420 3.454 3.482 3.510 3.532 3.560 3.584 3.606 3.620 3.634 3.652 3.666 3.680 3.686 3.694 3.700 3.706
4″ 3.240 3.320 3.400 3.432 3.482 3.524 3.560 3.594 3.640 3.670 3.704 3.732 3.760 3.782 3.810 3.834 3.856 3.870 3.884 3.902 3.916 3.930 3.936 3.944 3.950 3.956
4 1/4″ 3.490 3.570 3.650 3.682 3.732 3.774 3.810 3.844 3.890 3.920 3.954 3.982 4.010 4.032 4.060 4.084 4.106 4.120 4.134 4.152 4.166 4.180 4.186 4.194 4.200 4.206
4 1/2″ 3.740 3.820 3.900 3.932 3.982 4.024 4.060 4.094 4.140 4.170 4.204 4.232 4.260 4.282 4.310 4.334 4.356 4.370 4.384 4.402 4.416 4.430 4.436 4.444 4.450 4.456
4 3/4″ 3.990 4.070 4.150 4.182 4.232 4.274 4.310 4.344 4.390 4.420 4.454 4.482 4.510 4.532 4.560 4.584 4.606 4.620 4.634 4.652 4.666 4.680 4.686 4.694 4.700 4.706
5″ 4.240 4.320 4.400 4.432 4.482 4.524 4.560 4.594 4.640 4.670 4.704 4.732 4.760 4.782 4.810 4.834 4.856 4.870 4.884 4.902 4.916 4.930 4.936 4.944 4.950 4.956
5 1/4″ 4.490 4.570 4.650 4.682 4.732 4.774 4.810 4.844 4.890 4.920 4.954 4.982 5.010 5.032 5.060 5.084 5.106 5.120 5.134 5.152 5.166 5.180 5.186 5.194 5.200 5.206

>>DOWNLOAD PRINTABLE CHART<<

No Minimum footage is required to place an order and we ship from 3 locations spread out through the country – NY, Georgia, and CA.

If you still have questions or to request a quote, contact our friendly Sales Staff.