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6.5 Installation of Upsetting Beam/Piercing Beam
6.5.1 The installation of upsetting beam/piercing beam shall be carried out from above to below，and it is necessary to firstly install the upsetting beam，and then install the piercing beam.
6.5.2 After the guide sleeve of upsetting beam/piercing beam is installed，it is necessary to examine the fit clearance between it and the guide rail of column of machine frame.