Nrog rau txoj kev loj hlob ntawm kev lag luam hnyav, cov khoom siv forging kuj muaj ntau yam.Forging khoomhais txog cov cuab yeej siv tshuab siv rautsimthiab sib cais hauvtxheej txheem forging.
Forgingkhoom siv:
1. Forgingrauj rautsim
2. Mechanical xovxwm
3. Hydraulic xovxwm
4. Ntsia hlau xovxwm thiab forging tshuab
5. Forgingtus tswj
6. Uncoiler
7. Straightening tshuab
8. Cov
Forging khoomfeem ntau yog siv rau hlautsim, yog li nws tseem hu ua hlautsimtshuab cuab yeej.