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        Precision boring and rolling tube: Compared with traditional honing processing, it has the following advantages:
        (1) Improve processing efficiency: fast processing speed;
        (2) Improve surface hardness: high surface hardness;
        (3) Processing accuracy: The processing accuracy can reach IT8 level, and the surface roughness can reach Ra0.05-0.4μm;
        (4) Working environment: low noise, no pollution, saving labor costs;
        (5) Reasonable processing procedures: Scraping and rolling can be arranged as the last process after other processes (such as drilling oil port holes, welding, threading, etc.) are completed.