性欧美FREEXXXX,亚洲综合精品伊人久久,真实国产精品视频400部,强开小婷嫩苞又嫩又紧视频,色婷婷欧美在线播放内射,日本不卡一区二区三区在线,国产特级毛片aaaaaa,爱性久久久久久久久,亚洲日韩亚洲另类激情文学,国产在线精品一级?片

KW20 geotherm water well multifunction drilling rig is a lightweight, efficient, multi-function device of surface drill rig, which is mainly applied to drill water wells, agricultural irrigation wells, geothermal air conditioners hole and other uses of the well hole . This drilling rig can drill in the different stratum.the hole diameter can up to 254mm..This rig adopts the new type of hydraulic technology,matching a high torque hydraulic rotary motor and big diameter hydraulic cylinder propel,famous factory engine provide the powered for hydraulic system,two stage air filter and air compressor inlet design,prolong the service life of diesel energy.Especial pump team design for easy maintenance,reduce the cost of maintenance.Centralized control of the hydraulic control console,easy operation.This drilling rig using engineering machinery dedicated crawler underpan,good cross-country performance,independent module design,can install this drilling rig on a truck, increase its maneuverability. Combined type of locator,can according the different model of drill rod and DTH hammer to adjust and change the positioning tray,guarantee positioning centering are accurate and reliable.Winding gear convenience drill rod and DTH hammer lifting, reduce the labor intensity.