148mm flange for Concrete Pump Pipe 1.Q235B(ASTM A36) 2.Forging, ... 4.long service life 2-3 time 148mm flange for Concrete pump pipe MaterialQ235,20#steelModelDN125,DN150,DN175...etcTechnicalForging, high-temperature ... Concrete pump and pump truck pipelineUsed forSchwing, PM, Kyokuto, Sany, Zoomlion, GM 4"5"6"127mm148mm157mm175mm180mmPM male/femaleSchwing male/female 148mm flange for concrete pump pipe ...