Bor tembus digunakan untuk mengebor melalui mengebor melalui menjadi dua jenis, positif dan negatif, dengan spiikasi umum berkisar antara 3 מ "מ-15 מ" מ, קוקשוק אונטוק קטבלאן קיא יאנג ברבדה.
1.האגיאני ברבנטוק נגד יאנג sehingga bor lubang tidak akan menyabkan tepi ku pcah salama pengeboran.
2.Mengadopsi bahan pad paduan bahan memilikkkerasan dan ketahanan tinggi.
3.דידסין דנגן ulir berbentuk kerucut untuk penetri חומר יאנג לביה האלוס סאט מנגבור.







