ZOOMLION full casing drilling rigs provide a reliable way to construct bored pile foundations in difficult ground conditions. These heavy-duty foundation machines advance steel casing into the ground through rotational force and downward pressure, with casing extraction as part of the drilling process. The casing supports the borehole walls as soil is excavated that reduces the risk of collapse, borehole narrowing and groundwater interference.

Particularly effective in loose soil, sand, gravel and backfilled ground, this heavy construction equipment is used for bridge foundations, high-rise buildings, subway construction and municipal infrastructure projects. Contractors select the best drilling method on the basis of various factors such as pile diameter, borehole depth, ground conditions, and available space. The casing oscillators keep boreholes stable, ensure good construction quality, and have little effect on surrounding areas.