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Round Ornamental Tubing Specifications
and Information


Diameter, Wall, and Ovality Tolerances for Tubing with Bead Removed
OD Size, In. (mm) OD, +/- ID, +/-
in. mm in. mm
Up to 3/32 (2.4) excl. 0.001 0.03 0.001 0.03
3/32 to 3/16 (2.4 to 4.8), excl. 0.0015 0.038 0.0015 0.038
3/16 to 1/2 (4.8 to 12.7), excl. 0.003 0.08 0.005 0.038
1/2 to 1 (12.7 to 25.4), excl. 0.004 0.10 0.006 0.15
1 to 1 1/2 (25.4 to 38.1), excl. 0.005 0.13 0.007 0.18
1 1/2 to 2 (38.1 to 50.8), excl. 0.006 0.15 0.008 0.20
2 to 2 1/2 (50.8 to 63.5), excl. 0.007 0.18 0.010 0.25
2 1/2 to 3 1/2 (63.5 to 88.9), excl. 0.010 0.25 0.014 0.36
3 1/2 to 5 (88.2 to 127.0), incl. 0.015 0.38 0.020 0.51
Over 5 to 16 (127.0 to 406.4), incl. 0.00125 in/in
circumference		 0.0013 in/in
circumference
NOTE 1 - Ovality is the difference between maximum and minimum outside diameters measured at any one cross section.  There is no additional tolerance for Ovality on tubes having a nominal wall thickness of more then 3% of the outside diameter.
NOTE 2 - An Ovality allowance of twice the outside diameter tolerance, shown in this table, is applied one half plus and one half minus to the outside diameter, for tubes having a nominal wall thickness of 3% or less of the specified outside diameter.  The average of the maximum and minimum outside diameter readings should fall within the outside diameter tolerances of this table.
NOTE 3 - Tubing may be specified to outside diameter and wall.
NOTE 4 - Wall tolerance is +/- 10% of specified wall thickness.

Diameter, Wall, and Ovality Tolerances (All Conditions Except with bead removed)
OD Size In. Wall Thickness OD, +/-
In. mm. In. mm
Under 1/2 (12.7) 0.020 to 0.049 0.51 to 1.24 0.004 0.100
1/2 to 1 (12.7 to 25.4) 0.020 to 0.065 0.51 to 1.65 0.005 0.130
1/2 to 1 (12.7 to 25.4) Over 0.065 to 0.134 Over 1.65 to 3.40 0.010 0.250
Over 1 to 1 1/2 (25.4 to 38.1), incl. 0.025 to 0.065 0.64 to 1.65 0.008 0.200
Over 1 to 1 1/2 (25.4 to 38.1), incl. Over 0.065 to 0.134 Over 1.65 to 3.40 0.010 0.250
Over 1 1/2 to 2 (38.1 to 50.8), incl. 0.025 to 0.049 0.64 to 1.24 0.010 0.250
Over 1 1/2 to 2 (38.1 to 50.8), incl. Over 0.049 to 0.083 Over 1.24 to 2.11 0.011 0.280
Over 1 1/2 to 2 (38.1 to 50.8), incl. Over 0.083 to 0.149 Over 2.11 to 3.78 0.012 0.300
Over 2 to 2 1/2 (50.8 to 63.5), incl. 0.032 to 0.065 0.81 to 1.65 0.012 0.300
Over 2 to 2 1/2 (50.8 to 63.5), incl. Over 0.065 to 0.190 Over 1.65 to 2.77 0.013 0.330
Over 2 to 2 1/2 (50.8 to 63.5), incl. Over 0.109 to 0.165 Over 2.77 to 4.19 0.014 0.360
Over 2 1/2 to 3 1/2 (63.5 to 88.9), incl. 0.032 to 0.165 0.89 to 4.19 0.014 0.360
Over 2 1/2 to 3 1/2 (63.5 to 88.9), incl. Over 0.165 Over 4.19 0.020 0.510
Over 3 1/2 to 5 (88.9 to 127.0), incl. 0.035 to 0.165 0.89 to 4.19 0.020 0.510
Over 3 1/2 to 5 (88.9 to 127.0), incl. Over 0.165 Over 4.19 0.025 0.640
5 to 7 1/2 Over 0.250 Over 6.35 0.030 0.760
7 1/2 to 16 all all 0.00125  
NOTE 1 - Ovality is the difference  between maximum and minimum outside diameters measured at any one cross section.  There is no additional tolerance for Ovality on tubes having a nominal wall thickness of more then 3% of the outside diameter.
NOTE 2 - For sizes up to an including 5 in. outside diameter, an Ovality tolerance of twice the tubular outside diameter tolerance spread shown is applied one half plus and one half minus to tubes having a nominal wall thickness of 3% or less of the nominal outside diameter.  The average of the maximum and minimum outside diameter readings should fall within the outside diameter tolerances as shown in this table.
NOTE 3 - For sizes over 5 in.  to and including 16 in outside diameter, when the specified wall thickness is 3% or less of the outside diameter, the Ovality shall not exceed 1.5% of the specified outside diameter.
NOTE 4 - WALL tolerance +/- 10% of specified wall tolerance.

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