Chenghui Drilling Bits
High‑performance drilling tools · Catalog 2026
PDF catalog
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⚙️ What’s inside
· Rock hardness classification (F1–F12)
· Coring / coreless bit specs
· Five‑wing arc / sintered bits
· Operation & maintenance guide
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· Rock hardness classification (F1–F12)
· Coring / coreless bit specs
· Five‑wing arc / sintered bits
· Operation & maintenance guide
⚡ PDC cutters
⛰️ Rock grades F1–F12
🔄 Spiral / flat bits
🛡️ 13 maintenance tips
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