River pebble is a particularly common raw material for sand making. The machine-made sand processed by it can better replace natural river sand and be applied to commercial concrete, becoming an important raw material in various fields such as roads, bridges, municipal administration, construction, water conservancy and so on. The prospects cannot be underestimated. Mr. Zhang from Sichuan planned to set up a river pebble sand production line with an output of about 300 tons per hour. The technicians of Dongmeng factory selected a complete set of equipment for him, and designed a reasonable and scientific production line plan.