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Basically, nearly all pile foundation engineering construction will use kelly bar, a good rotary drilling rig need a good kelly bar to work together to do bore pile drilling work better. Whether a project can goes smoothly and how the efficiency of the progress is often related to the use of these drilling tools, among which, kelly bar plays a very important role. The durability of the kelly bar, its torque, and whether it can match well with different rotary drilling rigs directly determine the project efficiency. At the same time, if there is any problem in the construction process, whether the kelly bar supplier could provide a professional construction method solution in time is also very important. In addition to manufacture kelly bar and kinds of drilling tools,UNIDRILL has been committed to become a professional construction method solution provider. Choose UNIDRILL kelly bar, leave you with no worries.