PM Concrete Pump Spare Parts-Boom Pipe Material:ST52, 45Mn2, 20#,Q235 Brand: Schwing, PM, Sany, Kyokuto DN125 5 1/2" Concrete Pump Straight Pipe 1.Profile and Products ... concrete pump parts for SCHWING, PUTZMEISTER, SANY, CIFA, KYOKUTO, ZOOMLION for many years, so we can promise you the quality and best price.3.Technology: Our concrete pump pipe ...