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diamond drill workshop video (sichuan pdc diamond drill manufacturer)

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diamond drill bit sintering process diamond drill bit is a drilling masterthe more drill bits are used for hard formations, sometimes only use diamond bit to drill into the correct operation method of diamond drill bit. the center drill is generally used for the center of drilling, and there is 60 °, the front tapered side, the front end cone, 75 °, 90 °, etc., in the lathe, in order to use the tail seat, hold 60 ° center drill and.

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