Heavy machinery generally refers to the construction machinery: tower crane, the static piling machine and the construction elevator, diving drilling machine, concrete mixing station, crawler excavator, crawler bulldozers, crawler crane, diesel pile hammer, roller, rotary drilling machine, high speed winch, vibration sink vibration (static) pile drawing machine, high-pressure rotating spray pile machine and so on machinery. Plays an important role in the construction.

In recent years, with the development of national economy, "west-east gas", "China", "water" and so on serious engineering, steel, electric power, petrochemical, coal and other leading industries of national economy development and construction of foundation facilities of big planning, in the domestic demand for heavy machinery professional service ability and skill levels rising, although there will be bumpy, but demand market planning show the continuously increasing trend of convergence.