pm parts Specialized in concrete pump parts and spare parts,like delivery pipe,elbow,coupling,fitting ... introduction of our products: we produce and supply concrete pump parts(fitting to Schwing and PM , Sany, Zoomlion, ... :90, 60,45,30,15 3. concrete pump coupling/clampmaterial:Hi-Mn13,20#steel,etcsize:from ... to schwing,PM,SANY,Zoomlion,etc8.Other parts to the pump truck We can also supply the s-pipe ...