Concrete Pump delivery pipe: normal steel pipe and hardened pipe Sany, Zoomlion, Putzmeister, Schwing We, Zhuzhou Jian Da Co.,Ltd , ... but not limit to spectacle wear plate, wear ring, s pipe, chrome bushing, swing lever, intermidiate ring etc. Feel free to ... related S valve parts 3. Concrete pump spare parts: delivery Pipe, elbow, reducer, rubber seal, pistons, intermiate ring, swing lever etc 4 ...