MQT-70/1.8, 85/2.2, 90/2.3A, 100/3.1, 110/2.8, 120/3.0 and 130/3.2.Equipped drilling rod with two connection types, B19 and B22. MQT Series Pneumatic Roof Bolter, higher output power, high rotate speed and drilling power; convenient operation and maintenance to the air & water control valve; and special silencer bringing comfortable working condition, etc. MQT-70/1.8,MQT-85/2.2,MQT-90/2.3A,MQT- ...
Good mechanical properties,accurate measurement,uniform in diameter and free from all surface imperfection Quality of Zinc Coating GB3428-82 Steel Wire Diameter mmWeight of Zinc Coating not less than CuSO4 Corrosion Time(one time/60 second)not less than Zinc Coating Firm PropertyDiameter time of Zinc Bar Over Steel WireCirecle time1.25-1.501832481.51-1.7519821.76-2.252142.52.26-2.7522932.76-3. ...
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