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Flat bottom gun drill

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Non javelin drillreturn

description:The bottom end of the blind hole has special forming requirements for hole processing, such as ball head, flat bottom, taper, etc., which can be achieved by grinding the geometric angle of the gun drill head.

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The bottom end of the blind hole has special forming requirements for hole processing, such as ball head, flat bottom, taper, etc., which can be achieved by grinding the geometric angle of the gun drill head.

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