الوصف

Brand:GS       Models:LM**0
Product  use:oil  drilling  tool  drilling  oil  screw  drill  tool
warranty  time:*********8
Hob is used in shaft drilling rig for full face drilling and classification of surface soil, rock broaching cutting tools. Shaft hob is mainly used in mining, hydrogeology, ports, Bridges, buildings, and national defense construction of open caisson construction. At the same time apply to whole section rock tunneler with hob broken rock. Use the knife has a high degree of mechanization, suppling tunneling speed, good quality, low labor strength, construction safety operation, etc. Is the development direction of shaft excavation at home and