HRC / HB kwv yees hloov pauv tswv yim

HRC / HB kwv yees hloov pauv tswv yim
Hardness yog siab dua 20HRC, 1HRC≈10HB,
Hardness hauv qab 20HRC, 1HRC≈11.5HB.
Nco tseg: Rau kev txiav, nws tuaj yeem hloov mus rau 1HRC≈10HB (hardness ntawm workpiece cov ntaub ntawv muaj qhov txawv txav)

IKS PVD tuam txhab, lub tshuab ua kom zoo nkauj, cuab yeej txheej tshuab, kho qhov muag txheej tshuab, PVD nqus plua plav txheej kab, qhov phiaj xwm ua haujlwm tseem ceeb muaj. Ua rau peb tam sim no, E-mail: iks.pvd@foxmail.com