... concrete road, bridge maintenance Qingdao Antai Heavy Industry Machinery Co., Ltd.Founded in 2003, 10 years experience for making shot blasting machine ... for our machines. Road surface concrete shot blasting machine, floor concrete sand blast equipmentHow it works:Shot ... ........Technical parameter of floor shot blasting machine, concrete floor blast machine: ModelYDP11YDP12Walking speed0-1.8km/hr0-1 ...