1.Concrete Pump Spare Parts 2.Usd for concrete pumps 3.Agent:8 Countriey concrete ... cleaning ball,wear plate etc. Welcome to contact us for more information.Our product range is as follows; 1 ... is standard length,other length as to your requeirement.2. elbow/bend and reducer elbowmaterial:Hi-Mn13,20# ... pump coupling/clampmaterial:Hi-Mn13,20#steel,etcsize:from 2 to 6inch,DN125mm and DN 150mm is the common ...