4130 cov khoom siv yog cov khoom siv zoo alloy steel nrog lub zog zoo thiab kub ua haujlwm, dav siv hauv aerospace, shipbuilding, automotive manufacturing thiab lwm yam kev lag luam. Nws cov tshuaj muaj pes tsawg leeg suav nrog cov ntsiab lus xws li chromium, molybdenum, thiab hlau, thiab qhov tsim nyog feem ntawm ...
Nyeem ntxiv