Acculam® Tube

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Tubing Tolerances ID & OD (Inside Diameter & Outside Diameter)
Nominal Diameter - Inches ID Inside Diameter OD Outside Diameter vertical line OD
Tubing Tolerances
horizontal line ID
Steel Mandrel Built-up Mandrel
0.125" to 0.749"
0.750" to 1.999"
2.000" to 4.000"
4.001" to 8.000"
± .003"
± .004"
± .008"
± .010"
-
-
-
-
± .005"
± .005"
± .008"
± .025"
  *Turned *As Wound
8.001" to 12.000"
12.001" to 18.000"
18.001" to 24.000"
24.001" to 48.000"
± .010"
± .030"
± .040"
± .060"
-
± .060"
± .075"
± .090"
± .025"
± .030"
± .035"
± .040"
+ all
+ all
+ all
+ all
*Note: Tubing over 8.000" OD supplied as wound (turned OD quoted on request)
Tubing wall thickness tolerances (concentricity)
Wall Thickness Range Grades
XX, XXX
Paper Phenolic
LE, Linen Phenolic
to .500" ID
LE, Linen Phenolic
>500" ID
C, Canvas Phenolic All Glass Grades
G10/FR4,
G11/FR5,
G5/G9, G7
.010" to .016"
.017" to .031"
.032" to .062"
.063" to .125"
.126" to .250"
.251" to .500"
± .003"
± .005"
± .006"
± .007"
± .009"
± .011"
-
-
± .010"
± .011"
± .013"
± .015"
-
-
± .008"
± .009"
± .011"
± .013"
-
-
-
± .015"
± .020"
± .020"
-
± .006"
± .008"
± .009"
± .011"
± .013"

The tolerances listed are per NEMA Standards and are based on the ± deviation of the actual nominal wall thickness.

TIR- Total Indicator Runout is the difference between the lowest wall thickness reading and the highest wall thickness reading of a given tube section. It is the total of the ± tolerances listed in the concentricity table above.

Example- a XX tube 1.000" ID by 1.250" OD has a concentricity of ± .007". Thus, the TIR is .014".

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