Water Well Drilling Tools has the characteristics of large installed power, large output torque, large axial pressure, flexible maneuverability, high construction efficiency, and environmental protection. With different drilling tools, it can adapt to the geological conditions of most areas and become suitable for building basic engineering Ideal construction machinery for hole forming. In recent years, the environmental protection and high efficiency advantages of rotary drilling rigs have been recognized in the construction of the ring line network, especially in the construction of large-scale projects such as the Qinghai-Tibet Railway, the Olympic venues, and the new terminal of the Capital Airport.

　　 With the gradual deepening of reform and opening up and the demand of the market economy, a huge potential market for pile foundation construction machinery has emerged for the rapid development of railway, road and waterway transportation, urban public facilities and industrial and civil buildings, water conservancy and power facilities, and the construction of ports, terminals and airports. In terms of railway construction alone, my country will have another batch of new projects in 2005, and the total investment in railway construction will exceed 2 trillion yuan by 2020. This year there will be several high-speed passenger dedicated lines, such as Wuhan University, Zhengxi, Shitai, and Beijing-Tianjin. More than 60% of the high-speed passenger dedicated lines will be bridges, and most of the diameters of the bridge piles are suitable for the construction of rotary drilling rigs. This will follow the Qinghai-Tibet Railway. In the future, rotary drilling rigs will be used on a larger scale in railway construction.

Rock Button Bits and construction techniques have been quickly popularized in northern my country. In the southern region, especially in the developed southeast coastal areas, due to the soft ground, the piles are generally larger and deeper, and it is difficult for rotary drilling rigs to form holes. Mainly circulating drilling rigs. In fact, the rotary drilling rig can also be used in this area with some other equipment. One method is the combined construction of the rotary drilling rig and the casing drilling rig; the other method is to use the vibratory pile hammer that has been widely used in my country to sink and pull the steel casing. Construct holes in soft soil areas.