High Wear-resistant , long service life , lower cost 1.Type: S/K, PM Z/X, Sch F/M 2.Model:DN80,DN100, ... -5 times.3.OEM available from us.4.We are a professional manufactur of concrete pump spare parts in China,specilized ... -resistant Concret pump pipe flange DN125 Concrete Pump Collar Ring (S/K flange ,148mm)