Application Features of Low-Pressure DTH Hammers in Water Well Drilling Rigs

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The water well drilling rig works well with low-pressure DTH hammers (0.5-0.7Mpa).​
  1. Fits small rigs: Matches 3-6m³/min air compressors. Total cost under 20,000 yuan, good for <80m rural wells.​
  1. Excels in soft layers: Drills 2-3m/h in sand. Gentle on well walls, ideal for irrigation or shallow drinking wells.​
  1. Has limitations: Slow in hard rock—only 2-3m/day in granite. Better for plain areas, not complex mountains.​
Its low impact frequency (800-1200/min) reduces bit wear. The water well drilling rig cuts costs for rural use.​