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(1) Before ventilating the air leg rock drill, the handle of the pressure regulating valve should be moved to the "O" position to prevent the air leg from elongating suddenly during the ventilation an

Matters needing attention in the maintenance and maintenance of air leg rock drills (1) Before using the new machine of the air leg rock drill, it is necessary to disassemble and clean the internal p

In the afternoon of March 28, Deputy Mayor of Jining Municipal People's Government, Secretary of the Party Committee and Director of the Municipal Public Security Bureau, Li Haiyang, Deputy Secretary-

According to the "Measures For The Evaluation Of Technology-based Small And Medium-sized Enterprises" (Guoke Fazheng [2017] No. 115).And the relevant provisions of the "Notice On Carrying Out The Eval

Air leg rock drill is an improved low-energy rock drill. It has good performance under low pressure conditions, and is particularly suitable for long gas pipelines or powered by small air compressors.

On the afternoon of March 12, a batch of air leg rock drill were loaded and transported in the intelligent equipment production workshop of China Coal Group, and they will be sent to a mine in Hulunbu