... spare parts,like delivery pipe,elbow,coupling,fitting schwing,PM, 90 degree bendThis is the brief introduction of our products: we produce ... and supply concrete pump parts(fitting to Schwing and PM , Sany, Zoomlion,CIFA,etc),which include ... cleaning ball Material:natural rubber Size:DN100,DN125,DN150,according to your request 6.rubber items( adopt natural rubber) rubber hose ...