screws wholesale

Different performance grades of screws have corresponding hardness requirements. Through appropriate heat treatment processes and other means, the hardness of the screws can be ensured to meet the specified standards, so as to ensure that they can withstand certain loads without deformation or damage during use.
The surface of the screws must not have cracks, burrs, dents, etc., which may affect the performance and appearance quality of the screws. Surface defects may cause problems during installation or reduce their corrosion resistance, etc.
Galvanizing and passivation: One of the common surface treatment methods, it can improve the corrosion resistance of the screws. The galvanizing layer has certain thickness requirements and needs to undergo passivation treatment to enhance the protective effect of the coating.