Forged SK flange 1.Material:Q345B 2.Technical: Forging,rolling 3.hardness of 62-64 4.4-7inches long service life Forged SK flange 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, Concrete pump forged SK flange