high pressure rubber hose Specialized in concrete pump parts and spare parts,like delivery pipe,elbow,coupling,fitting schwing high pressure rubber hoseThis is ... elbow, reducer, (coupling)clamp , male and female flange ,rubber hose,cleaning ball,wear plate etc. Welcome to contact us for ... line(wear-resistant seamless or welded tube)material:45Mn2,high quality alloy steel pipe,st52,20#steel,etcsize:DN ...