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Hfj13 Hydraulic Tunneling Jumbo Drilling Rig. Efficient Drilling System: 20KW power with 60Hz frequency ensures high-efficiency drilling performance. Advanced Control Technology: CAN communication technology with automatic hole opening and anti-stick functions. Stable Hydraulic Support: Double two-angle suspension ensures accurate hydraulic parallel holding in all directions. High Load Capacity Boom: Heavy-duty telescopic boom with box structure bearing capacity over 1.5 tons. Wide Perforation Range: Supports drill pipe specifications T38-H35 and R32 with 45-89mm perforation range. Safety and Stability: Chassis and safety ceiling design ensure operator safety and equipment stability.