... 3.hardness of 62-64 4.long service life pump spare parts 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, ... and production of the new generation of concrete pump truck pipe flanges and wear-resisting, forgings with ...