TUBING & PIPE

OUTSIDE DIAMETER TOLERANCES for
HOT FINISHED SEAMLESS TUBING A,B,C
Outside Diameter
in Inches Over Under
Up to 2.999 .020 .020
3.000 to 4.499 .025 .025
4.500 to 5.999 .031 .031
6.000 to 7.499 .037 .037
7.500 to 8.999 .045 .045
9.000 to 10.750 .050 .050
A
Diameter tolerances are not applicable to normalized and tempered or quenched and
tempered conditions.
B
The common range of sizes of hot finished tubes is 1½" to 10¾" outside diameter with
wall thickness at least 3% more of outside diameter, but not less than 0.095".
C
Larger sizes are available; consult manufacturer for sizes and tolerances.
HOT FINISHED SEAMLESS ROUND TUBING
WALL THICKNESS TOLERANCES
Wall Thickness in Inches as
% of OD
ASTM A519
OVALITY TOLERANCES
ASTM A513-T5
Wall Thickness Tolerance in Inches,
A
% Over and Under Nominal
Outside Outside Outside
Diameter Diameter Diameter
2.999" 3.000" 6.000 in.
and Smaller to 5.999" to 10.750"
Under 15 12.5 10.0 10.0
15 and over 10.0 7.5 10.0
A
Wall thickness tolerances may not be applicable to walls 0.199" and less;
consult manufacturer for wall tolerances on such tube sizes.
Ovality shall be within the below tolerance except when wall thickness is less than 3% of the
OD. In such cases, the additional ovality shall be as follows, but the mean diameter shall be
within the specified tolerance:
Outside Diameter
Additional Ovality Tolerance
in Inches
in Inches
Up to 2.000 .010
Over 2.000 to 3.000 .015
Over 3.000 to 4.000 .020
Over 4.000 to 5.000 .025
Over 5.000 to 6.000 .030
Over 6.000 to 7.000 .035
Over 7.000 to 8.000 .040
Over 8.000 to 9.000 .045
Over 9.000 to 10.000 .050
Over 10.000 to 11.000 .055
Over 11.000 to 12.000 .060
Over 12.000 to 13.000 .065
Over 13.000 to 14.000 .070
Over 14.000 to 15.000 .075
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