... ,20#steelModelDN125,DN150,DN175,so onTechnicalForging, high-temperature 1200 forging and intoAppicationConnection of Concrete pump and pump truck pipelineUsed forSchwing, PM, Kyokuto, Sany ... manufacturer of flange and concrete pump pipe clamp,which use the national high quality 20# steel (Q235).After high-temperature 1200 forging, and ...