... for concrete pumps 3.Agent:8 Countriey concrete pump spare parts This is the brief introduction of ... our products: we produce and supply concrete pump parts(fitting to Schwing and PM , Sany, ... .2. elbow/bend and reducer elbowmaterial:Hi-Mn13,20#steel,st52,etcsize:DN 125mm or DN 150mm ... 90, 60,45,30,153. concrete pump coupling/clampmaterial:Hi-Mn13,20#steel,etcsize:from 2 to 6inch,DN125mm ...