GL-4000 drill was introduced in the development premise, main structure and performance parameter and its main use was described. The machine can drill in variable positions depending on advanced hydraulic system with direct-operated load feedback fine-tuning and digital display device. Equipped with high-pressure injection pump, the drill can be used for variable rotary jet grouting construction, and with DTH hammer and simultaneous casing drilling tool the drill also can be used for simultaneous casing drilling.