The four axle Sikkps series 426 Sa type car with telescope housing and internal side stakes is used for long-load and pipe freights which require protection from ambient factors during transportation.
The car is based on the four axle 424 Z type flat car.
The car has a type certificate of operation from the General Railways Inspector (currently, the Railroad Transportation Agency).
| A | B | C | |
| S | 31,5 t | 39,5 t | 47,5 t |
| 120 | 00,0 t | ||
Specification
| Empty car speed [km/h] | 120 |
| Loaded car speed [km/h] | 100 |
| Tare weight [t] | 32,4 |
| Carrying capacity [t] | 47,5 |
| Box capacity [m3] | 107,5 |
| Floor loading surface [m2] | 43,9 |
| Length over buffers [mm] | 19900 |
| Side stakes height (above the wooden floor) [mm] | 1922 |
| Loading length [mm] | 18648 |
| Loading width [mm] | 2356 |
| Bogie type | 25 TNa |
| Brake system | Oerlikon |