Condensed ASTM Specification for SS Tubing & Piping
Specification |
Allowable Outside Diameter Variations in mm |
Allowable Wall thickness Variations |
Exact Length Tolerances in mm |
Testing |
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|---|---|---|---|---|---|---|---|---|
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 |
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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 |
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|
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 |
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