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In areas with corrosive soil, concrete piles must be utilized. The hollow piling contractors north west threaded rebar system is likewise called a self-drilling hollow bar system. In this system, the hollow bar can function as a sacrificial drill little bit which obtains transformed to a central reinforcement as well as can also be utilized to clear out the particles. This system can eliminate predrilling, frequent removal of pipelines and drills, etc and can take care of any problem connecting to the setup of micropiles.