KW10 KW20 KW30 portable crawler water well drilling rigs manufacturer & supplier, produced by Liaocheng Jinquan Construction Machinery Co.,Ltd., China. KW10 Crawler Water Well Drilling Rig: Matched with LGCY-18/17 diesel portable air compressor Hole Diameter: 115-254mm Hole Depth: 100m KW20 Crawler Water Well Drilling Rig: Matched with LGCY-26/20 diesel portable air compressor Hole Diameter: 115-254mm Hole Depth: 200m KW30 Crawler Water Well Drilling Rig: Matched with LGCY-33/25 diesel screw air compressor Hole Diameter: 168-300mm Hole Depth: 300m KW10 Drilling Machine Matched With LGCY-18/17 Screw Air Compressor; KW20 Crawler Water Well Drilling Rig Matched With LGCY-26/20 Compressor; KW30 Drill Rig Matched With LGCY-33/25 Diesel Portable Screw Air Compressor. All of the above screw air compressors are cummins engine.