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FIND THE TECHNICAL TUBE INFORMATION AND TUBE SPECIFICATION
YOU ARE LOOKING FOR BY METAL TYPE:
Welded Mechanical Alloy Steel Tube Tolerances
As Welded Round Hot Rolled Electric Weld (HREW)
Diameter Tolerances
| Outside Diameter Size Range Inches | Wall Thickness | Outside Diameter Tolerance, Inches | ||
|---|---|---|---|---|
| BWG | Inches | Plus | Minus | |
| 3/4 to 11/8 incl. | l6 to 10 | .065 to .134 | .0035 | .0035 |
| Over 1 1/8 to 2, incl. | 16 to 7 | .065 to .180 | .005 | .005 |
| Over 1 1/8 to 2, incl. | 6 to 3 | .203 to .259 | .005 | .005 |
| Over 2 to 2 1/2, incl. | 16 to 3 | .065 to .259 | .006 | .006 |
| Over 2 1/2 to 3 , incl. | 16 to 3 | .065 to .259 | .008 | .008 |
| Over 2 1/2 to 3 , incl. | 2 to .320 | .284 to .320 | .010 | .010 |
| Over 3 to 31/2 incl. | 16 to 3 | .065 to .259 | .009 | .009 |
| Over 3 to 31/2 incl. | 2 to .360 | .284 to .360 | .012 | .012 |
| Over 31/2 to 3 incl. | 16 to 3 | .065 to .259 | .010 | .010 |
| Over 31/2 to 4 incl. | 2 to .500 | .284 to .500 | .015 | .015 |
| Over 4 to 5, incl. | 16 to 3 | .065 to .259 | .020 | .020 |
| Over 4 to 5, incl. | 2 to .500 | .284 to .500 | .020 | .020 |
| Over 5 to 6, incl. | 16 to 3 | .065 to .259 | .020 | .020 |
| Over 5 to 6, incl. | 2 to .500 | .284 to .500 | .020 | .020 |
| Over 6 to 8, incl. | 11 to 3 | .l20 to .259 | .025 | .025 |
| Over 6 to 8, incl. | 2 to .500 | .025 | .025 | .025 |
|
NOTE 1 ó Measurements for diameter are to be taken at least 2 inches from the ends of the tubes.
NOTE 2ó OVALITY shall be within the above tolerances except when the wall thickness is less than 3% of the outside diameter. In such cases the ovality may be 50 percent greater than the outside tolerances but the mean outside diameter shall be within the specified tolerance. |
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Wall Tolerances
| Wall Thickness | Outside Diameter, Inches | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inches | BWG | 3/4 to 1, incl. | Over 1 to 115/16, incl. | Over 115/16 to 33/4, incl. | Over 33/4 to 41/2, incl. | Over 41/2 to 8, incl. | |||||||
| Wall Thickness Tolerances, Inches | |||||||||||||
| Plus | Minus | Plus | Minus | Plus | Minus | Plus | Minus | Plus | Minus | ||||
| .065 | 16 | .005 | .009 | .004 | .010 | .003 | .011 | .002 | .012 | .002 | .012 | ||
| .072 | 15 | .005 | .009 | .004 | .010 | .003 | .011 | .002 | .012 | .002 | .012 | ||
| .083 | 14 | .006 | .010 | .005 | .011 | .004 | .012 | .003 | .013 | .003 | .013 | ||
| .095 | 13 | .006 | .010 | .005 | .011 | .004 | .012 | .003 | .013 | .003 | .013 | ||
| .109 | 12 | .006 | .010 | .005 | .011 | .004 | .012 | .003 | .013 | .003 | .013 | ||
| .120 | 11 | .006 | .010 | .005 | .011 | .004 | .012 | .003 | .013 | .003 | .013 | ||
| .134 | 10 | .006 | .010 | .005 | .011 | .004 | .012 | .003 | .013 | .003 | .013 | ||
| .148 | 9 | - | - | .006 | .012 | .005 | .013 | .004 | .014 | .004 | .014 | ||
| .165 | 8 | - | - | .006 | .012 | .005 | .013 | .004 | .014 | .004 | .014 | ||
| .180 | 7 | - | - | .006 | .012 | .005 | .013 | .004 | .014 | .004 | .014 | ||
| .203 | 6 | - | - | - | - | .007 | .015 | .006 | .016 | .005 | .017 | ||
| .220 | 5 | - | - | - | - | .007 | .015 | .006 | .016 | .005 | .017 | ||
| .238 | 4 | - | - | - | - | .012 | .020 | .011 | .021 | .010 | .022 | ||
| .259 | 3 | - | - | - | - | .013 | .021 | .012 | .022 | .011 | .023 | ||
| .284 | 2 | - | - | - | - | .014 | .022 | .013 | .023 | .012 | .024 | ||
| .300 | 1 | - | - | - | - | .015 | .023 | .014 | .024 | .013 | .025 | ||
| .320 | - | - | - | - | - | .016 | .024 | .015 | .025 | .014 | .025 | ||
| .344 | - | - | - | - | - | .017 | .025 | .016 | .026 | .015 | .027 | ||
| .360 | - | - | - | - | - | .017 | .025 | .016 | .026 | .015 | .027 | ||
| .375 | - | - | - | - | - | - | - | .016 | .026 | .015 | .027 | ||
| .406 | - | - | - | - | - | - | - | .017 | .027 | .016 | .028 | ||
| .438 | - | - | - | - | - | - | - | .017 | .027 | .016 | .028 | ||
| .469 | - | - | - | - | - | - | - | - | - | .016 | .028 | ||
| .500 | - | - | - | - | - | - | - | - | - | .016 | .028 | ||
Inside Weld Flash
| HREW tubing is usually produce to OD x Wall dimensions only and in three categories determined by height of inside diameter welding flash: Flash-In-Tubing ó ID flash does not exceed wall thickness or 3/32" whichever is less. Flash Controlled .010" ó ID flash is .010" maximum height. Flash Controlled .005" ó ID flash is .005" maximum height. |
As Welded Round Cold Rolled Electric Weld (CREW)
Diameter Tolerances
| Outside Diameter Size Range Inches | Wall Thickness | Outside Diameter Tolerance, Inches | ||
|---|---|---|---|---|
| BWG | Inches | Plus | Minus | |
| 1/4 to 3/8 incl. | 22 to 14 | .028 to .083 | .0025 | .0025 |
| Over 3/8 to 5/8, incl. | 22 to 16 | .028 to .065 | .003 | .003 |
| Over 3/8 to 5/8, incl. | 14 to 12 | .083 to .109 | .003 | .003 |
| Over 5/8 to 1 1/8, incl. | 22 to 14 | .028 to .083 | .0035 | .0035 |
| Over 5/8 to 1 1/8, incl. | 13 to 11 | .095 to .120 | .0035 | .0035 |
| Over 1 1/8 to 2, incl. | 22 to 14 | .028 to .083 | .005 | .005 |
| Over 1 1/8 to 2, incl. | 13 to 9 | .095 to .148 | .005 | .005 |
| Over 2 to 21/2, incl. | 20 to 18 | .035 to .049 | .008 | .008 |
| Over 2 to 21/2, incl. | l3 to 9 | .095 to .148 | .006 | .006 |
| Over 21/2 to 3 incl. | 16 to 9 | .065 to .148 | .008 | .008 |
| Over 3 to 31/2, incl. | 20 to 9 | .035 to .148 | .009 | .009 |
| Over 31/2 to 4, incl. | 20 to 8 | .035 to .165 | .010 | .010 |
| Over 4 to 5, incl. | 16 to 14 | .065 to .083 | .020 | .020 |
| Over 4 to 5, incl. | l3 to 8 | .095 to .165 | .015 | .015 |
| Over 5 to 6, incl. | l6 to 8 | .065 to .165 | .020 | .020 |
|
NOTE 1 ó Measurements for diameter are to be taken at least 2 inches from the ends of the tubes.
NOTE 2ó OVALITY shall be within the above tolerances except when the wall thickness is less than 3% of the outside diameter. In such cases the ovality may be 50 percent greater than the outside tolerances but the mean outside diameter shall be within the specified tolerance. |
||||
Wall Tolerances
| Wall Thickness | Outside Diameter, Inches | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inches | BWG | 3/8 to 7/8, incl. | Over 7/8 to 11/8, incl. | Over 17/8 to 33/4, incl. | Over 33/4 to 5, incl. | Over 5 to 6, incl. | |||||||
| Wall Thickness Tolerances, Inches | |||||||||||||
| Plus | Minus | Plus | Minus | Plus | Minus | Plus | Minus | Plus | Minus | ||||
| .028 | 22 | .001 | .005 | .001 | .005 | - | - | - | - | - | - | ||
| .035 | 20 | .002 | .005 | .001 | .005 | .001 | .005 | - | - | - | - | ||
| .049 | 18 | .003 | .006 | .002 | .006 | .002 | .006 | - | - | - | - | ||
| .065 | 16 | .005 | .007 | .004 | .007 | .004 | .007 | .004 | .007 | .004 | .007 | ||
| .083 | 14 | .006 | .007 | .005 | .007 | .004 | .007 | .004 | .007 | .004 | .008 | ||
| .095 | 13 | .006 | .007 | .005 | .007 | .004 | .007 | .004 | .007 | .004 | .008 | ||
| .109 | 12 | - | - | .006 | .008 | .005 | .008 | .005 | .008 | .005 | .009 | ||
| .120 | 11 | - | - | .007 | .008 | .006 | .008 | .005 | .008 | .005 | .009 | ||
| .134 | 10 | - | - | .007 | .008 | .006 | .008 | .005 | .008 | .005 | .009 | ||
Inside Weld Flash
| CREW tubing is usually produce to OD x Wall dimensions only and in three categories determined by height of inside diameter welding flash: Flash-In-Tubing - ID flash does not exceed wall thickness or 3/32" whichever is less. Flash Controlled .010" - ID flash is .010" maximum height. Flash Controlled .005" - ID flash is .005" maximum height. |
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes.
© 2011 Production Tube Cutting, Inc.
Production Tube Cutting Inc. can provide competitive tube cutting, tube bending, tube forming, tube machining, custom tube fabrication and tube pre-assembly services for your carbon alloy steel tube requirements, including welded, mechanical steel tube tolerances as welded, round, hot (HREW) or cold (CREW), rolled electric weld, including diameter, wall and inside weld flash specifications.
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