trailer pump parts Specialized in concrete pump parts and ... delivery pipe,elbow,clamp,rubber hose for PM,etc concrete trailer pump partsThis is the brief introduction of our products: ... to your requeirement. 2. elbow/bend and reducer elbowmaterial:Hi-Mn13,20#steel,st52,etcsize:DN 125mm or DN 150mm ... 60,45,30,15 3. concrete pump coupling/clampmaterial:Hi-Mn13,20#steel,etcsize:from 2 to 6inch,DN125mm and ...