Diameter Tolerances for Drawn Tube
Specified diameter | TOLERANCE PLUS OR MINUS |
Allowable deviation of diameter from specified diameter |
Tempers T4 and T42 T6 and T42 | All other tempers |
>25 >75 >125 | | ≤25 ≤75 ≤125 ≤160 | 0.20 0.30 0.40 0.50 | 0.10 0.15 0.20 0.25 |
all dimesions in millimetres unless specified - tighter tolerances available on request
Wall Thickness Tolerance for Drawn Tube
TOLERANCE |
| ± 10% of specified wall thickness (minimum tolerance = ±0.15mm) |
Straightness Tolerance for Drawn Tube
(Except 0 temper)
Specified outside diameter or width mm | TOLERANCE ± MM |
Allowable deviation, D, from straight |
In any 300 mm length or less | In total length of L metres |
≤10 >10 | ≤160 | 12.00 0.33 | 40.00 L 1.10 L |
all dimesions in millimetres unless specified - tighter tolerances available on request Tolerance for Squareness of Cut Ends for Drawn Tube
TOLERANCE |
Allowable deviation from square |
± 2 degrees |
Length Tolerances for Drawn Tube
Specified outside diameter or width | TOLERANCE |
Allowable deviation fromspecified length mm | Allowable deviation fromspecified length % |
Straight length, m | Coiled length, m |
mm | ≤4 | >4 ≤10 | >10 | ≤30 | >30 ≤75 | >75 ≤150 | >150 |
>6 >30 >75 | ≤6 ≤30 ≤75 ≤160 | +6.0 +3.0 +3.0 +5.0 | +10.0 +6.0 +6.0 +6.0 | +12.0 +10.0 +10.0 +11.0 | +5 +5 - - | ±10 ±10 - - | ±15 ±15 - - | ±20 ±20 - - |
all dimesions in millimetres unless specified - tighter tolerances available on request