... in China Carbide City, are specialized in manufacturing concrete pump wear parts for concrete pumps, including Sany, Zoomlion, Putzmeister,Schwing, ... products are mainly include but not limit to spectacle wear plate, wear ring, s pipe, chrome bushing, swing lever, ... Kyokuto, Putzmeister, Waitzinger etc 3. other concrete pump spare parts: delivery Pipe(both normal and hardened) , elbow(welding& casting ...