Pemgkun has many different brands Concrete Pump Piston Ram , Putzmeister, schwing, sany, zoomline,cifa, Niggate, kyokuto and so on brand. Pm concrete pump piston, we have integral piston and divided piston ram. The split piston ram is composed of two concrete pump piston seals and two guide rings. This kind of Concrete Pump Spare Parts -PM split rubber piston is usually with fabric inside. And the outer material is natural rubber. Working life is 20000cbm-40000cbm. And working pressure is 180bar. In the putzmeister original factory parts numbers, the rubber piston