At the same time, these large-scale projects also need to use a lot of sand and gravel, which requires the sand and gravel production line and sand making equipments. Bridges and roads are closely related to and lives of ordinary people, so that quality of gravels is the most important factor. In order to ensure the quality of roads and bridges, construction personnels should choose a reasonable gravel production line.

Bridges have a close relationship with people’s lives. In recent years, with the growth in the national economic development and people’s living standards, it has a growing demand of convenient transportation. China’s road and bridge construction is developed continuously, and construction of overpasses in the second and third tier cities has become a trend. Three, four or higher overpass is no longer the patent of big cities.

1.Selection of equipments should be according to the actual situation of materials. Equipments package include: jaw crusher, impact crusher, hammer crusher, sand making machine, vibrating feeder, conveyor (belt machine), vibrating screen and sand washing machine. Generally crushing machine manufacturer will arrange the products collocation based on customers’ actual situations, in order to achieve maximum operating efficiency of the crushing equipments. It is recommended that investors listen to the recommendations of the crusher manufacturers and choose reasonable production line configuration.powder grinding mill:

2.Sand production process: firstly the blasting rocks preliminary crushed by jaw crusher; then they are moderate crushed in the impact crusher or cone crusher which is chosen according to the stone hardness and required fineness; finally they are crushed into standard aggregate particles by the sand making machine. Wet sand making also has requirements of sand washing machine to clean sand and gravel materials in order to form high-quality sands and gravels used by roads and bridges. We have done experiments for all aspects of the equipments, and there are thousands of successful cases for verification to ensure absolutely quality.

3.Depending on the local conditions, some areas directly use the river gravel or pebbles to do processing. According to stone sediment concentration and particle size, the selecting equipments are: jaw crusher,impact crusher, hammer crusher and sand making machine, etc.. Hongxing offers various equipments for different raw materials, and it is very professional and qualified.