driven cast-in-place pile driver / pile driver / construction equipment Compacted Expanded carrier pile senior in engineering technology is a great deal of work to do based on developed a large area in the country to promote the use of, and has formed his own design and construction, technical specifications, technology has improved and market acceptance. Immersed tube hydrostatic pile composite technology is rammed cast pile carrier an extension and development of technology, there are some inadequacies. Such as: bulky machine high cost structure of the complex, which is equivalent to the value of capacity is equivalent carrier tamping machine expansion of the 2 3 times; as a result of greater self-pile in soft ground subsidence during the construction easier to machine side squeeze has become a pile of piles and so on. Immersed tube hydrostatic pile composite technology is a new thing, but also the needs of seniors and colleagues in the engineering support and assistance, but also the need to improve technologies to improve equipment, you also need more practical application of engineering and experience in order to provide users with more good service.