... ,elbow,clamp,rubber hose for PM,etc concrete trailer pump partsThis is the brief introduction of our ... products: we produce and supply concrete pump parts(fitting to Schwing and PM , Sany, ... )degree:90, 60,45,30,15 3. concrete pump coupling/clampmaterial:Hi-Mn13,20#steel,etcsize:from ... etc rubber sponge balls:for all kinds of concrete pump pipefittings 7.wear plate and cutting ring ...