... , long service life , lower cost 1.Type: S/K, PM Z/X, Sch F/M 2.Model ... are a professional manufactur of concrete pump spare parts in China,specilized in producing concrete pump pipe , high wear resistant pipe, rubber hose, elbow, ... WorkmanshipMultiunit Flange Application All Concrete pump trucks SUJ2 DN125 Wear-resistant Concret pump pipe flange DN125 Concrete Pump Collar Ring (S/K flange ,148mm) ...