The main technical level of Down-Hole Drilling Rig, with nine patents, has remain the international advanced level. The ... main technical level of Down-Hole Drilling Rig, with nine patents, has remain the international advanced level. ... 3500×8800~138005200×1800×2730Transporting8800~13800×2600×3580(Put the drilling rig down) Integrated Hydraulic Down-Hole Drilling Rig