... of 62-64 4.long service life concrete pump pipe 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, ... treatment technology, hardness of 62-64 °. 3.This series of products for high wear-resisting hardening of the ...