concrete pump pipe cleaning ball for cleaning the pipes. Concrete Pump Cleaning Ball size from 4inch-6inch, soft, ... PM, Kyokuto, Cifa, SanNameConcrete Pump Cleaning BallsizeDN100(4 inch) soft ,hard ,medium soft DN125(5 inch) soft ,hard ,medium ... concrete pump and concrete pump truck in construction workService Brand Schwing, PM, Kyokuto, CIFA, Sany, Zoomlion, and so on 2inch-125inch Concrete Pump Pipe ...