7 Inch DTH Hammer

The 7 inch DTH hammer is a top-tier heavy-duty drilling equipment, designed for ultra-large boreholes and extremely demanding drilling conditions. Its standard drilling diameter range is typically between 180mm and 220mm. It represents the pinnacle of DTH technology in terms of impact energy and drilling scale, and is primarily used in large-scale projects with extreme demands for borehole diameter and efficiency.

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This 7-inch down-the-hole hammer (SP780 model) belongs to the Ultra-Strong series. Independently developed by our company, this hammer features a bottomless valve design and is one of the most advanced down-the-hole hammers in the world.

Urban high-rise buildings, high-speed railways, highways, bridges, subways, hydropower stations, nuclear power plants, and other engineering projects all involve cast-in-place pile foundation construction. With the increasing demand for drilling into hard rock layers in pile foundation construction for these projects, the Ultra-Strong series of large-diameter down-the-hole hammers has emerged to fully meet the rock penetration requirements of pile foundation construction in the construction industry.