国产美女精品久久久久久蜜臀-97精品久久久中文字幕-亚洲一区二区三区在线激情-亚洲欧美精品综合在线观看-国产精品乱码久久久久久久-少妇人妻精品一区二区三区

KW30 geotherm water well multifunction drilling rig is after market research design can drill 300m hole drilling equipment.It was based on mature KW10/KW20 geotherm water well multifunction drilling rig upgrade one lightweight, efficient, multi-function device of surface drill equipment, which is mainly applied to drill water wells, agricultural irrigation wells, geothermal air conditioners hole and other uses of the well hole.Optimization of the hydraulic system,using famous factory hydraulically-operated valve,Ensure the jumbo stable performance.Reasonable improvement of carriage parts,increase the wear plate,reduce the wear in the drilling,prolong the service life.Powerful high torque hydraulic rotary motor and big diameter hydraulic cylinder propel,guarantee that the drilling rig reliable operational performance.