Dawb Txiav Hlau C1144 Lub Teeb Hloov Chaw Haujlwm Polishing Rod Me Sib Tsoo Qws Me

Dawb Txiav Hlau Rau Kev Siv

Siv raws li tig hlau, siv dav hauv cov txheej txheem.

Tshuaj lom neeg cov tshuaj:

Cov pa roj carbon C: 0.40 ~ 0.48

Silicon Si: 0.15 ~ 0.35

MANMANESE MN: 1.35 ~ 1.65

P: ≤0.040

Sulphur S: 0.24 ~ 0.33

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