Tuam hlau

1.2367

S45C tau ua ntej hardened rau 285-330HB (30-36HRC) thiab tuaj yeem siv ncaj qha rau kev ua pwm, nrog kev ruaj ntseg zoo. Pre hardened steel tuaj yeem

Cov cuab yeej thiab kev siv ntawm Cov Hlau Txiav Dawb