Gdrill has been active in the Greek market since 1991, providing high quality products and services. The company's premises (offices, sheltered factory and warehouses) are located in an industrial area of 2500 s.m. in the area of Rentis.
[pdf] In 1986, Lianhuashan Drilling Tools Co., Ltd. introduced a full set of HYD200 hydraulic rock drill production technology from France Secoma Company and successfully produced China's first hydraulic rock drill.
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A pneumatic drill relies on compressed air pressure for power. Pneumatic drills are one of the most efficient drilling tools in the market in terms of capacity, productivity, and functionality. For example, a sledgehammer will hit the ground ten times a minute, while pneumatic drills can hit the ground 1500 times. .
A pneumatic drill consists of a handle and an outer casing. Inside the drill are a valve, a pile driver, and a network of tubes. The drill bit protrudes outside the case and extends when the drill operates. In addition, the pneumatic drill connects to a diesel-powered air. .
Pneumatic drills are heavy machinery requiring great strength and safety precautions. The drill hitting the ground produces rough vibrations, which pose a risk for the operator.. .
When the operator presses down the handle (Figure 2 labeled A), the compressor pumps air into the pneumatic drill through a spring-loaded valve on one side (Figure 2 labeled B). The pneumatic drill encloses a circuit of air tubes, a heavy piledriver (Figure 2.
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