... Truck-mounted Concrete Placing Boom 1.Matched with a trailer concrete pump,Website:http://www.dowinmachinery.com, it can achieve continuous and rapid concrete ... placing boom, and thus constitutes an "economy truck-mounted concrete pump", which replaces a real one, and reduces ... and grate efficiency. Technical Data of Truck-mounted Concrete Placing Boom Working ArmArm number3Mode of controlRadio ...