Profile: Hebei Qijiu Trading Co., Ltd. specializes in producing mortar spraying machines, concrete pumps, and shotcrete machines. JOKI ZW-20 trailer mounted concrete pumps come in an array of outputs 15 cubic meters per hour over distances of 80m. Our trailer-mounted small concrete pumps offer the ideal solution for placing concrete or shotcrete in hard?to-access areas because of their compact size, they can also be used as an alternative to truck-mounted concrete pumps on larger pours that require a slower output rate.