Dab Tsi Yog Dub Annealed Steel Yeeb Nkab

Cov yeeb nkab dub tshem tawm yog ib qho ntawm cov kav hlau feem ntau. Yog tias cov hlau txias txias tau ua kom sov rau qhov kub hnyiab, cov xim saum npoo yuav tig dub vim qhov kub sib cuag nrog huab cua, uas yog hu ua dub stripped steel. Nws saum npoo tsis tau ci ntsa iab, yog li nws yog xim dub. Lub cev nqaij daim tawv dhau los ua mos, uas yooj yim rau kev txuas ntxiv kom ua cov kav hlau. Qhov nyuaj ib yam yog 57HRB, thiab nws kuj tseem tuaj yeem txo qis rau qhov sib txawv raws qhov xav tau.