DH17B2 XL is a new generation full-hydraulic bulldozer. The two-circuit electronically controlled static pressure drive system can intelligently adapt to the load variation and realize steering and pivot steering under loaded condition, featuring high working flexibility and efficiency and low fuel consumption. The hydraulic pilot control for the working device features simple and sensitive operations. The sealed shock-absorbing cab features large space, high safety and comfort, and low noise. The modular structure features low malfunction rate and easy maintenances.