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Kelly Bar Spring is a precision-engineered elastic component used in rotary drilling rigs to absorb impact and reduce vibration during drilling operations. It plays a vital role in protecting the Kelly bar sections and rotary drive system, ensuring smooth, safe, and efficient pile construction.
Extended-range electric dynamic compaction crane is an electric dynamic compaction product launched proactively by APIE in line with the national strategy and the market demand. the Eextended-range electric dynamic compaction crane is more eficient, reliable and intelligent while maintaining lower consumption.
A mixing plant is a facility that combines raw materials like aggregates (sand, gravel), cement/bitumen, and water to produce construction materials such as concrete or asphalt for road building and other projects, with types ranging from large stationary setups for massive projects to mobile units for temporary or remote sites, focused on efficiency, quality, and precise material ratios.
This precision-engineered gearing box is specially designed for trench cutters (hydromills), delivering high torque transmission, durability, and structural stability under extreme working conditions. It ensures reliable power output for vertical trenching in diaphragm wall construction and soil mixing applications.

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