ASTM & EN SPECIFICATION & TOLERANCE
| Specifications | Allowable outside Diameter Variations in mm | Allowable Wall Variations in %. | Exact Length Tolerances in mm | Testing | ||||
|---|---|---|---|---|---|---|---|---|
| Diameter | Over | Under | Over | Under | Over | Under | ||
| ASTM A-213 Seamless Ferritic & Austenitic steel, Boiler & Superheater Tubes & Austenitic steel Heat Exchange Tubes. |
Under 25.4 25.4 – 38.1 incl. 38.1 – 50.8 excl. 50.8 – 63.5 encl. 63.5 – 76.2 excl. 76.2 – 101.6 incl. |
0.1016 0.1524 0.2032 0.2540 0.3084 0.3810 |
0.1016 0.1524 0.2032 0.2540 0.3084 0.3810 |
20 20 22 22 22 22 |
0 0 0 0 0 0 |
3.175 3.175 3.175 3.760 4.760 4.760 |
0 0 0 0 0 0 |
|
| ASTM A-269 Seamless & Welded Austenitic steel, Tubing for general service. |
Under 12.7 12.7 – 38.1 excl. 38.1 – 88.9 excl. 88.9 – 139.7 excl. 139.7 – 203.2 excl. |
0.13 0.13 0.25 0.38 0.76 |
0.13 0.20 0.25 0.28 0.38 |
15 10 1010 10 |
15 10 1010 10 |
3.2 3.2 4.8 4.8 4.8 |
0 0 0 0 0 |
|
| ASTM A-270 Seamless & Welded Austenitic steel for Sanitaru Tubing. | Under 25.4 25.4 – 38.1 excl,. 50.8 – 76.2 excl. 76.2 – 101.6 excl. |
0.13 0.20 0.25 0.38 |
0.13 0.20 0.25 0.38 |
12.5 12.5 12.5 12.5 |
12.5 12.5 12.5 12.5 |
3.2 3.2 3.2 3.2 |
0 0 0 0 |
|
