... 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, Zoomlion ... etc)degree:90, 60,45,30,153. concrete pump coupling/clampmaterial:Hi-Mn13,20#steel,etcsize:from 2 ... to 6inch,DN125mm and DN 150mm is the common size,other sizes like DN80,DN100,DN175 are ...