China Drill Rod Taper Manufacturer 11 Degree Rock
China drill rod taper manufacturer 11 degree rock drill rod: Description: Tapered drill rod is a further development of the integral drill rods. It usually has a forged collar to maintain the proper shank striking face. position in the rock drill. Length. 400mm-8000mm or customize length: Taper Degree: 4°46’, 6°, 7°, 11°, 12°; Shape ...
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