concrete pump S valve 1. Welding type 2. Casting type We, Zhuzhou Jian Da Co.,Ltd , locatd in China ... , Sermac, IHI, Niigata etc 2. S pipe and related S valve partsFitting to Sany, Zoomlion, Kyokuto, Putzmeister, Waitzinger etc 3. other ... spare parts: delivery Pipe(both normal and hardened) , elbow(welding& casting), reducer, rubber seal, pistons, intermiate ring, swing lever etc We ...