High quality Friction Welding DTH drill pipe price / drill rods price 76,89,102,114mm for rock blasting and water well drillingThe drill pipe,the shortened form of down the hole drill pipe, is a kind of outer flat drill rod. It is mainly used in rotary percussive drilling that contains gases and liquids. Its main components include pipe (rod) body and joint.Our down the hole drill pipe is manufactured based on the API standards. And according to specific requirements, we also provide this kind of drill pipe in different Chinese and American specifications.As for its advantages, it has
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