... This is the brief introduction of our products: we produce and supply concrete pump parts(fitting to Schwing and ... degree:90, 60,45,30,15 3. concrete pump coupling/clampmaterial:Hi-Mn13,20#steel,etcsize:from 2 ... ,PM,etc rubber sponge balls:for all kinds of concrete pump pipefittings 7.wear plate and cutting ring Fitting ... ,PM,SANY,Zoomlion,etc8.Other parts to the pump truck We can also supply the s-pipe, ...