Cov yeeb nkab steel yuav tsum tsis txhob muaj qhov nyuaj tshaj 50 hli nyob rau hauv ib qho kev taw qhia thiab nrog tus nqi hardness siab dua 35HRC (327HBW / 345HV10). Yog tias muaj, lawv tuaj yeem raug tshem tawm.
Dab tsi yuav tsum tau them sai sai rau thaum chamfering - tawv me ntsis
Sep 30, 2024
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