Type: HBT-S-valve Trailer concrete pump Minimum Order Quantity:1 Unit/Units Supply Ability: 500 Units/month HBT S-valve serial high-pressure pumps, Z-gate-valve serial medium-pressure pumps and D-butterfly-valve serial low-pressure pumps are concrete transport equipments widely applied to such building projects as urban construction, bridge, power, and energy sources, etc. The machines adopt such ...