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  • For key and important parts with tensile strength greater than 1034Mpa, the stress should be removed at 200±10℃ for more than 1 hour before plating, and for carburized or surface hardened parts, the stress should be removed at 140±10℃ for more than 5 hours. The cleaning agent used for cleaning shall have no effect on the binding force of the coating and no corrosion on the substrate. Acid activation Acid activation solution should be able to remove corrosion products and oxide film (skin) on the surface of parts without excessive corrosion on the matrix.

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  • steel security screens

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  • Four: spray blade thorn rope long service life.

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  • Galvanized hexagonal net is a kind of galvanized metal wire mesh, mesh shape is hexagonal.

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  • Pet

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  • Post time: 17-05-23

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