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H22 Tapered Drill Rod for Hexagonal Drill Rod Specification: Rod Length:500~6400mm Shank length: H22*108mm Advantages: The tapered drill rod can be matched with multiple drill bits to drill blast holes with dif...
Top-drive type, high-efficiency, multi-functional fully hydraulic drilling rig features advanced technology, easy use, high operating efficiency, reliability and durability. This drilling rig is widely used in ...
A twisted spiral drill rod is a coal mine drilling rod for high-efficiency soil penetration and rock drilling in challenging environments. Its defining feature is a deep, continuous helical (spiral) groove mach...