A closed three-phase engineering water grinding rig, an engineering water drill, a borehole drill, an excavator, a non-directed parallel rig, a horizontal parallel drill, a granite concrete water grinder, a building-type slab water drill, a steel condensed concrete drill, a water grinder drill, a diamond blade, a high-frequency welder etc. Use: engineering water mills are used extensively for drilling boreholes in buildings such as construction, roads, ramp management, slabs, bridges, building infrastructure works, concrete boreholes, tunnel reinforcement, municipal pipelines, etc. Various products, such as rigs, drills, long poles, etc., may be ordered as required by the client. The water grinding rigs consist of, inter alia, water grinding rigs, water grinding drills and components. An average water grinder is equipped with a three-to-five water grinder, and a water grinder has seven knives on it. The water grinder is 16 centimetres outside, with an inner diameter of 14 centimetres, a wall thickness of 1 centimetre, height of 62 centimetres and a cycle of 60 centimetres. Water grinder parameters: type: yx160 weight: 100 kg size: drill diameter: 160 mm drilling depth: 600 mm electric power: 5. 5 kw drill speed: 820 rotations: construction operation convenience, small occupancy site, no mud excretion, reliable construction quality