... concrete pump parts in China, specialized in producing concrete pump delivery pipe, rubber hose, elbow, bend, reducer, coupling, cleaning ball, piston ... has passed ISO 9001-20006.lifetime:35000-45000 cubicConcrete Pump Delivery Pipe Specification: TypeDNThickness(mm)Length(mm)Weld-on EndsApplicable pump ... 010006inch HD/ZX-6inch F/MOthersproduct picture: ST52 Concrete Pump Delivery Pipe with SK Flange