STRAIGHT LENGTHS

     

DIMENSIONAL TOLERANCES

OUTER DIAMETER TOLERANCE FOR COPPER TUBES AS PER ASTM STANDARDS
OUTER DIAMETER (inches)
Tolerance range
Fraction
Decimal
Lowest
Highest
Limit (+/-)
1/8
0.125
0.123
0.127
0.002
1/4
0.250
0.248
0.252
0.002
3/8
0.375
0.373
0.377
0.002
1/2
0.500
0.498
0.502
0.002
5/8
0.625
0.623
0.627
0.002
3/4
0.750
0.748
0.753
0.0025
7/8
0.875
0.873
0.878
0.0025
1
1.000
0.998
1.003
0.0025
1 1/4
1.250
1.247
1.253
0.003
1 1/2
1.500
1.497
1.503
0.003
1 3/4
1.750
1.747
1.753
0.003
2
2.000
1.997
2.003
0.003
2 1/4
2.250
2.246
2.254
0.004
2 1/2
2.500
2.496
2.504
0.004
2 3/4
2.750
2.746
2.754
0.004
3
3.000
2.996
3.004
0.004
3 1/4
3.250
3.245
3.255
0.005
3 1/2
3.500
3.495
3.505
0.005
3 3/4
3.750
3.745
3.755
0.005
4
4.000
3.995
4.0505
0.005

 

WALL THICKNESS TOLERANCE FOR COPPER TUBES AS PER ASTM STANDARDS
WALL THICKNESS
TOLERANCE LIMIT ( + / - )
OUTER DIAMETER (inches)
1/32 - 1/8
1/8 - 5/8
5/8 - 1
1 - 2
UP TO 0.017"
0.002"
0.001"
0.0015"
0.002"
0.017" TO 0.024
0.003"
0.002"
0.002"
0.0025"
0.024" TO 0.034"
0.003"
0.0025"
0.0025"
0.003"
0.034" TO 0.057"
0.003"
0.003"
0.0035"
0.0035"
0.057" TO 0.082"
...
0.0035"
0.004"
0.004"
0.082" TO 0.119"
...
0.004"
0.005"
0.005"
0.119" TO 0.164"
...
0.005"
0.006"
0.006"
0.164" TO 0.219"
...
0.007"
0.009"
0.009"