1. According to the type of workpiece, The three-axis thread rolling machine is used to process hollow steel pipes, and the two-axis thread rolling machine is used to process solid steel bars.
2. Raws li lub dov txoj kab uas hla ntawm lub workpiece, muaj ntau yam qauv xaiv los ntawm. Lub tshuab ua qauv ib leeg tuaj yeem yob nyob rau hauv ntau txoj kab uas hla.