SCHWING KIDNEY SEAL: TUNGSTEN CARBIDE TYPE We, Zhuzhou Jian Da Co.,Ltd , locatd ... , are specialized in manufacturing concrete pump wear parts for concrete pumps, including Sany, Zoomlion, Putzmeister,Schwing, Kyokuto,CIFA, Sermac, Niigata, Mitsubishi ... Pipe(both normal and hardened) , elbow(welding& casting), reducer, rubber seal, pistons,coupling, intermiate ring, swing lever etc We can also ...