Feature: *In order to ensure the firmness of the drill bit we adopted a brazing method to weld carbide inserts. In this way the drill bit can process harder metal (compared with HSS countersinks),But this will make the appearance of the drill bit not... more
Feature: *In order to ensure the firmness of the drill bit we adopted a brazing method to weld carbide inserts. In this way the drill bit can process harder metal (compared with HSS countersinks),But this will make the appearance of the drill bit not... more
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