... ,like delivery pipe,elbow,coupling,fitting schwing high pressure rubber hoseThis is the brief introduction of our products: we produce and supply concrete ... . pipe line(wear-resistant seamless or welded tube)material:45Mn2,high quality alloy steel pipe,st52,20#steel,etcsize:DN 125mm ... to schwing,PM,etc rubber sponge balls:for all kinds of concrete pump pipefittings 7.wear plate and cutting ring Fitting ...