
90mm Electric & Pneumatic DTH Drilling Machine for Granite Quarrying. High Efficiency Drilling: Achieves drilling speeds of 5-10 meters per hour for granite quarrying. Dual Power Options: Available in both pneumatic and electric-pneumatic models to suit different needs. Flexible Customization: Supports OEM, ODM, and full customization from samples or designs. Deep Drilling Capability: Capable of reaching a maximum depth of 30 meters with a single feed stroke of 1.2 meters. Comprehensive After-Sales Support: Includes online technician support and training videos for one year. ISO9001 Certified Quality: Manufactured under ISO9001:2015 management system with 100% function inspection. Low Minimum Order Quantity: Accepts orders starting from just 1 piece for flexible purchasing. Fast Lead Time: Production lead time is within 15 working days for both peak and off-peak seasons.