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Due to the different purposes and construction objects of the rock drilling and excavation engineering, there are many types of drilling rigs. Drills can be classified according to their purpose,...
First, the rig regularly check the project 1. Inspect the main structural condition of the drilling rig, bolts of structural connections, connection pins of structural parts, welds of various...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.