concrete pump S valve 1. Welding type 2. Casting type We, Zhuzhou Jian Da Co.,Ltd , locatd in China Carbide City, are specialized in manufacturing concrete pump wear parts ... , Niigata etc 2. S pipe and related S valve partsFitting to Sany, Zoomlion, Kyokuto, Putzmeister, Waitzinger etc 3. other concrete pump spare parts: delivery Pipe ...