Sand from its sources can be divided into: sea sand, river sand, mountain sand and machine-made sand. The sea sand although very clean, but high in salt, chloride ion corrosion steel case is very likely to occur in construction projects, pose a safety hazard. If you want to distinguish whether it is sea sand, sand…

Preparation: 1. Tools: wrench, pliers, screwdriver, small hammer, shovel, etc; 2. The necessary spare parts: various sub chain, link, bolt, nut, pin crusher of insurance, etc.; 3. The lubricating oil, turbine oil. Inspection and handling: 1. Motor, gear reducer, hydraulic coupling, the nose and the tail part of the connection must be complete, intact and…