... concrete pump parts and spare parts,like delivery pipe,elbow,coupling,fitting schwing high pressure rubber hoseThis is the brief introduction of ... Schwing and PM , Sany, Zoomlion,CIFA,etc),which include delivery pipe, elbow, reducer, (coupling)clamp , male and female flange , ... (wear-resistant seamless or welded tube)material:45Mn2,high quality alloy steel pipe,st52,20#steel,etcsize:DN 125mm or DN ...