Analysis Concerning Defects of Hot-rolled Seamless Steel Tube Made withФ 89 mm MPM Line

Based on the operation circumstances of the Ф89 mm semi-floating mandrel MPM line at the facility of Hengyang Steel Tube (Group) Co., Ltd., all the defects of the steel tubes produced by the mill line since commissioning thereof are classified and analyzed, identifying the causes and accordingly, preventive actions proposed.