Nominal Tube Dimensions Chart (BWG)
BWG is an alternative measurement for steel tubing sizes (outside diameter and wall thickness). BWG stands for “Birmingham Wire Gauge” (or “Stubs Iron Wire Gauge”). Each BWG number represents a specific steel tubing thickness, which can be converted in inches or mm.
USA Industries
Product Line Sheet
|
Outside Diameter (OD): |
BWG Tube Gauge Thickness: |
Tube O.D. |
Tube Gauge |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BWG 00 | BWG 0 | BWG 1 | BWG 2 | BWG 3 | BWG 4 | BWG 5 | BWG 6 | BWG 7 | BWG 8 | BWG 9 | BWG 10 | BWG 11 | BWG 12 | BWG 13 | BWG 14 | BWG 15 | BWG 16 | BWG 17 | BWG 18 | BWG 19 | BWG 20 | BWG 21 | BWG 22 | BWG 23 | BWG 24 | |
Wall Thickness (in) |
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| .380 | .340 | .300 | .284 | .259 | .238 | .220 | .203 | .180 | .165 | .148 | .134 | .120 | .109 | .095 | .083 | .072 | .065 | .058 | .049 | .042 | .035 | .032 | .028 | .025 | .022 | |
Tube I.D. |
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| 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 | .010 | .032 | .060 | .084 | .106 | .120 | .134 | .152 | .166 | .180 | .186 | .194 | .200 | .206 |
| 3/8" | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | .015 | .045 | .079 | .107 | .135 | .157 | .185 | .209 | .231 | .245 | .259 | .277 | .291 | .305 | .311 | .319 | .325 | .331 |
| 1/2" | N/A | N/A | N/A | N/A | N/A | .024 | .060 | .094 | .140 | .170 | .204 | .232 | .260 | .282 | .310 | .334 | .356 | .370 | .384 | .402 | .416 | .430 | .436 | .444 | .450 | .456 |
| 5/8" | N/A | N/A | .025 | .057 | .107 | .149 | .185 | .219 | .265 | .295 | .329 | .357 | .385 | .407 | .435 | .459 | .481 | .495 | .509 | .527 | .541 | .555 | .561 | .569 | .575 | .581 |
| 3/4" | N/A | .070 | .150 | .182 | .232 | .274 | .310 | .344 | .390 | .420 | .454 | .482 | .510 | .532 | .560 | .584 | .606 | .620 | .634 | .652 | .666 | .680 | .686 | .694 | .700 | .706 |
| 7/8" | .115 | .195 | .275 | .307 | .357 | .399 | .435 | .469 | .515 | .545 | .579 | .607 | .635 | .657 | .685 | .709 | .731 | .745 | .759 | .777 | .791 | .805 | .811 | .819 | .825 | .831 |
| 1" | .240 | .320 | .400 | .432 | .482 | .524 | .560 | .594 | .640 | .670 | .704 | .732 | .760 | .782 | .810 | .834 | .856 | .870 | .884 | .902 | .916 | .930 | .936 | .944 | .950 | .956 |
| 1 1/8" | .365 | .445 | .525 | .557 | .607 | .649 | .685 | .719 | .765 | .795 | .829 | .857 | .885 | .907 | .935 | .959 | .981 | .995 | 1.009 | 1.027 | 1.041 | 1.055 | 1.061 | 1.069 | 1.075 | 1.081 |
| 1 1/4" | .490 | .570 | .650 | .682 | .732 | .774 | .810 | .844 | .890 | .920 | .954 | .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" | .740 | .820 | .900 | .932 | .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" | .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 |