CARBON STEEL SCREW
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CARBON STEEL HEXAGONAL HEAD SELF DRILLING SCREW
HEXAGONAL HEAD SELF DRILLING SCREW is the popular product of our factory, daily production can reach more than 10 tons, the specification conforms to international standard，heat treatment and galvanizing make hardness and corrosion resistance stronger, not only can meet the customer's requirements for any salt spray test hours, but also to meet the customer's requirements for surface treatment.
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