Khoom siv → smelting → atomized zoo li tus hlau txhaj tshuaj → puag ncig xaiv → quenching → tempering → tiav → ntim → tsim nyog txhaj tshuaj steel;
Hlau txhaj tshuaj → crushing → quenching → isothermal tempering → zoo xaiv → zoo screen → ntim → tsim nyog steel xuab zeb
