... WHL series crawler type long rotary drilling rig 1.Stable and reliable, high efficiency, 2.Strong overload capacity .WHL series crawler type long rotary drilling rig specificationsPile ... rise buildings, highways, high-speedrailway foundation treatment . Rotary drilling rig get rid of the cable tie and mobiles flexiblly, ... kW)55×255×2Total weight(t)6890 WHL series crawler type long rotary drilling rig