Foco na produção personalizada de desenvolvimento de parafusos
Development history and classification of self - tapping screws and rivetsThe earliest rivets were small studs made of w
Function and test method of self - tapping screw triple screwTriple screw is also called triple screw.The name si yi, is
1, screw length is not good, can not accept the corresponding torque.2, the strength of the screw, hardness is not good
The characteristics of non - standard screw is: drilling tapping teeth, lock once completed, strong binding force.Save c
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