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Condensed ASTM Specification for SS Tubing & Piping

Specification for SS Tubing & Piping


Specification
Allowable Outside Diameter Variations in mm
Allowable Wall thickness Variations
Exact Length Tolerances in mm
Testing
ASTMA - 312 Seamless & Welded Pipe
3.175 - 38.1 incl.
0.4
0.79
Minimum Wall
6.4
0
Tension Test
38.1 - 101.6 incl.
0.79
0.79
12.5% under
6.4
0
Flattering Test
101.6 - 203.2 incl.
1.59
0.79
nominal wall specified
6.4
0
100% Hydrostatic Test
Refer to ASTMA-530
ASTMA - 213 Seamless Boiler Superheater and Heat Exchanger Tubes
Nominal Diameter
Over
Under
%Over
%Under
Over
Under
Under 25.4
0.1016
0.1016
20
0
3.175
0
Tension Test
25.4 - 38.1 incl.
0.1524
0.1524
20
0
3.175
0
Flattering Test
38.1 - 5.8 excl.
0.2032
0.2032
22
0
3.176
0
Flare Test
50.8 - 63.5 excl.
0.254
0.254
22
0
4.76
0
Hardness Test
63.5 - 76.2 excl.
0.3048
0.3048
22
0
4.76
0
100% Hydrostatic Test
76.2 - 101.6 incl.
0.381
0.381
22
0
4.76
0
Refer to ASTMA - 50
ASTMA A - 249 Welder Boiler Superheater Heat Exchanger and Condenser Tubes
Under 25.4
0.1016
0.1016
10
-10
3.175
0
Tension Test
25.4 - 38.1 incl.
0.1524
0.1524
10
-10
3.175
0
Flattering Test
38.1 - 50.8 excl.
0.2032
0.2032
10
-10
3.175
0
Flare Test
50.8 - 63.5 excl.
0.254
0.254
10
-10
4.76
0
* Reserve Bend Test
63.5 - 76.2 excl.
0.3048
0.3048
10
-10
4.76
0
Hardness Test
76.2 - 101.6 excl.
0.381
0.381
10
-10
4.76
0
100% Hydrostatic Test
Reverse Flattering Test Refer to ASTMA A-450 wherever applicable
ASTMA - 269Seamless & WeldedTubing for GeneralService
UPTO 12.7
0.13
0.13
15
-15
3.2
0
Flare Test
12.7 - 38.1 excl.
0.13
0.13
10
-10
3.2
0
Flange Test (Welded Only)
38.1 - 88.9 excl.
0.25
0.25
10
-10
4.8
0
Harness Test
88.1 - 139.7 excl.
0.38
0.38
10
-10
4.8
0
Reverse Flattering Test
139.7 - 203.2 excl.
0.76
0.76
10
-10
4.8
0
(Welded Only)
100% Hydrastatic Test Refer to ASTMA - 269