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Small rigs (<30kW): Use low-pressure hammers (0.5-0.7MPa, 65-110mm). Fits 3-6m³/min compressors. Drills <50m rural wells at 2-3m/h, cost <8,000 yuan/well.
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Medium rigs (30-50kW): Adopt medium-pressure hammers (0.8-1.2MPa, 110-150mm). 1200-1600 impacts/min, drills 8-10m/day in limestone. Cuts costs by 30% in mixed strata.
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Large rigs (>50kW): Equip high-pressure hammers (1.3-2.0MPa, 150-250mm). 1600-2000 impacts/min, drills 10-15m/day in 300m hard rock. Shortens time by 40%.
Wet hammers work better in water-rich areas; dry ones suit arid regions. Long-stroke models resist wear in fractured rock. The water well drilling rig gains more efficiency from smart adjustments now.
