Maximum drilling depth: 200m

Drilling diameter: 90-254mm

Engine: Yunnei 55KW

Maximum drilling depth: 220m

Drilling diameter: 90-315mm

Engine: Yunnei 65KW

Maximum drilling depth: 260m

Drilling diameter: 90-305mm

Engine: Yuchai 77KW

Maximum drilling depth: 300m

Drilling diameter: 105-325mm

Engine: 85 or 91KW

Maximum drilling depth: 350m

Drilling diameter: 105-325mm

Engine: Yuchai 91kw

Maximum drilling depth: 400m

Drilling diameter: 105-350mm

Working wind pressure: 1.05-3.45Mpa

Maximum drilling depth: 500m

Drilling diameter: 105-350mm

Working wind pressure: 1.05-4.5Mpa

Maximum drilling depth: 600-700m

Drilling diameter: 105-500mm

Working wind pressure: 1.05-4.5Mpa