... Concrete Pump Placement Pipe with SK Flange Material:ST52, 45Mn2, 20#,Q235 Brand: Schwing, PM, Sany, Kyokuto DN125 5 1/2" Concrete Pump ... professional manufacturer of concrete pump parts in China, specialized in producing concrete pump delivery pipe, rubber hose, elbow, bend, reducer, coupling, cleaning ball, ... HD/ZX-6inch F/MOthersproduct picture: ST52 Concrete Pump Placement Pipe with SK Flange