... service life , lower cost 1.Type: S/K, PM Z/X, Sch F/M 2.Model:DN80,DN100,DN25,DN150,DN175 ... resistant pipe, rubber hose, elbow, flange, cleaning balls, pistons, eye-glasses plate, concrete placing boom,and so on .5. If you ... Wear-resistant Concret pump pipe flange DN125 Concrete Pump Z/X Collar Rings for PM,Schwing,Cifa