... rubber hose; rubber hose for waterway desilting, cementing pump truck, concrete, grout, sediment, coal injection truck, bulk cement ... steel shot, sediment, ball bearing, cement powder, cement concrete, dry powder mortar, coal fines, carbon powder, and ... needs to be re-determined as the customer’s requirement. 2.Requirements for special working pressure, ... 7,8,10,12,18 ect. Concrete pump rubber hose