... 1.high-head gravel pump,abrasion resistance material 2. application for river dredging sand pump 3.high pressure mud pump 1, ... Overview: Type ZG(or ZGH)gravel pumps are designed for continously handling the most difficult higher abrasive slurries which contain too ... , Main Usages Delivery of slurry with strong abrasion high concentration for metallurgy, mines, coal and power plant, especially the large ...