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Bor datar kayu yang umum digunakan spesifikasi memiliki diameter luar 6mm-40m, bahan yang umum digunakan di pasaran adalah tidak. 45 Steel, yang kekerasannya adalah HRC40-48. Jika merek yang lebih baik menggunakan baja No. 65, kekerasan udara bor tiga titik dapat berupa HRC45-54, dan efek pemotongannya lebih baik.
2022/06/13
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.