Hydraulic subsurface drilling machine friction welding Core Drilling Rod Introduction to Water Well Drill Pipe The water well drill pipe body is made of materials produced by large domestic iron and steel ... Read More
High Strength Φ 50 x0. 8M Geological drill Rod For Core /Water Drilling Characteristics Adopt high-end friction welding technology, the steel of the friction drill pipe body and joints is made of high-quality ... Read More