Lub steel sawb yog txuas ntxiv mus los ntawm disc shear los ua tus kab sib txawv yog siv los tswj cov khoom siv dav los ua kom yooj yim rau kev sib raug ntawm cov kauv Ob npaug - ob tog submered arc welded yeeb nkab.
27.4. Dab tsi yog qhov ua haujlwm ntawm ntug txiav?
Aug 25, 2025
Xa kev nug
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