Underground Rock Extension Rod

Product Overview Underground Rock Extension Rod is a sturdy Round Extension Drill Rod designed for underground rock drilling operations. It can be connected with Coupling Sleeve to extend the total length of drill strings, and is compatible with Tapered Drilling Tools such as Fully carburized taper drill rods for mixed drilling configurations. Key Advantages Made of premium alloy steel and processed with precise heat treatment, this extension rod features excellent impact toughness and wear resistance. Its smooth round body reduces friction during drilling. It can sustain continuous heavy impact underground, lowering the risk of rod breakage and improving overall drilling efficiency. Detailed Features The precision threaded end ensures stable and quick assembly. It can be combined with Round Extension Drill Rods to reach deeper boreholes. Threaded Coupling Sleeve acts as an auxiliary connector for switching between threaded and tapered drilling tool assemblies. Application Range It is…