flange for concrete pump pipe 1,Forging&rolling, long service life 2.Q235,hardness is 62-64 3.Stable quality, and low price. flange for concrete pump pipe MaterialQ235,20#steelModelDN125,DN150,DN175,so onTechnicalForging, high-temperature 1200 forging and intoAppicationConnection of Concrete pump and pump truck pipelineUsed forSchwing, PM, Kyokuto, Sany, Zoomlion, Ihi, Niigata1.We are a ...