concrete pump coupling DN 125,DN150, DN100 by casting PM/Schwing/Sany ... Base, are specialized in manufacturing concrete pump wear parts for concrete pumps, including Sany, Zoomlion, Putzmeister,Schwing, Kyokuto, Cifa, Sermac, Niigata, Mitsubishi, IHI etc ... Sermac, IHI, Niigata etc 2. S pipe and related S valve partsFitting to Sany, Zoomlion, Kyokuto, Putzmeister, Waitzinger etc 3. other concrete pump ...