... pump pipe , 45Mn2 Wear-resistant pipes, Twin wall pipes ,Reducer , tee, .ect.2, the towed concrete pump, Concrete placing boom series.3 ... pump piston , delivery cylinder,.ect4: Concrete pump clamp : DN80, DN100,DN125,DN150 Casting pipe clamp and Forged clamp.5, Other accessories: Rubber hose , Cleaning ...