All dimensions metric: lengths in mm, areas in m2, weights in metric tons, pressures in atmospheres.
| Class | Axle Arr. |
Dr. Dia. |
Cylinders Dia. x Str. |
B.P. | Ad. Wt. |
EW WO |
Grate Area |
Evap Surf. |
Sup. Surf. |
Remarks |
| A1 | 2'B | 1525 | 405x510 | 8.5 | 18 | 29 | 1.1 | 90 | none | |
| A2 | 2'B | 1825 | 405x510 | 8.5 | 19 | 30 | 1.1 | 90 | none | |
| A6 | 2'B | 1675 | 405x510 | 10 | 23 | 35 | 1.2 | 82 | none | Also A3, A5, A7 |
| B1 | B1t | 1250 | 355x510 | 10 | 20 | 27 | 1.0 | 58 | none | |
| B2 | B1t | 1140 | 290x455 | 8.5 | 14 | 21 | 0.8 | 37 | none | |
| C2 | C | 1250 | 380x510 | 8.5 | 25 | 25 | 1.2 | 76 | none | Also C1 |
| C4 | C | 1250 | 380x510 | 8.5 | 29 | 29 | 1.2 | 76 | none | |
| C5 | C | 1120 | 370x485 | 10.6 | 20 | 20 | 1.0 | 51 | none | |
| D1 | 1B | 1600 | 405x560 | 10 | 20 | 33 | 1.5 | 82 | none | |
| F1 | B2't | 1250 | 310x510 | 10.5 | 16 | 26 | 0.9 | 40 | none | |
| G1 | 1'C | 1250 | 380x510 | 10 | 21 | 25 | 1.1 | 61 | none | Sk1 |
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