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O diâmetro da broca de torção é limitado pela abertura, a ranhura em espiral torna o núcleo mais fino, a rigidez da broca é baixa; Twist Bit Bit para concreto apenas dois cintos de costela, o eixo do orifício é fácil de distorcer; A borda horizontal dificulta a centralização, a resistência axial aumenta e a broca é fácil de balançar.
2022/06/13
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.