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drill rod is a tool to connect the drill and rock drill. The general use of drill rod of coal roadway construction of six hollow steel and six steel hollow Park, hollow steel internal diameter of 22mm and 25mm Park, hollow steel park outside diameter is 32mm and 38mm, have finished steel forged steel and steel products, according to a certain length of the drill is forged straight after installation on the drill bit drilling, forged steel is according to the needs of the hollow six angle shearing and forging machine, forging shank and a drill head, and then mounted on the drill bit drilling.
The rod body is made of 55SiMnMo high quality six square hollow alloy steel as raw material. The product is calcined by high pressure and heat treatment by vacuum holistic quenching and tempering. The numerical control automation equipment is used to process and form, and the stable and reliable product quality is guaranteed. The products are widely used in mine roadway supporting drilling, mine drilling, coal mine roadway, bridge tunnel and other projects.
