... pump ST52 pipe Specialized in concrete pump parts and spare parts,like delivery pipe,elbow,coupling,fitting schwing,PM ... #steel,etcsize:DN 125mm or DN 150mmWall thickness:4.1-7.1mmlength:3meters is standard length,other ... DN80,DN100,DN175 are upon to your request 4.reducer Material:45Mn2,st52 Length:1.2M,1. ... hose:DN 125mm and DN 150mm ,3 or 4 meters,other sizes upon your request rubber piston/gasket ...