... .51000175 steel pipe1504.5500175 The main products 1,Concrete pump pipe :ST52 concrete pump pipe , 45Mn2 Wear-resistant pipes, Twin wall pipes ,Reducer , tee, .ect.2 ... , S valves, Concrete pump piston , delivery cylinder,.ect4: Concrete pump clamp : DN80, DN100,DN125,DN150 Casting pipe clamp and Forged clamp.5, Other accessories: Rubber hose , Cleaning ...