perforated sheet metal speaker grill

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perforated sheet metal speaker grill

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  • Of course, the quality of any kind of product is also affected by the implementation of the specification of the manufacturer, if it is the welding screen manufacturers in the production of their own is not very high implementation of the specification, or in the production line of the procedure specification has declined, or there is no higher requirements on the production link.

    perforated sheet metal speaker grill

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  • Iron and steel in the condition of cooling on the surface galvanized, and hot dip galvanized steel pipe in the condition of hot dip on the surface, its adhesion is strong, not easy to fall off, hot dip galvanized pipe although also rust phenomenon, but in a long period can meet the technical and sanitary requirements.

    perforated sheet metal speaker grill

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    perforated sheet metal speaker grill perforated sheet metal speaker grill

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  • B. When the thickness of the plating is greater than 4 mm, the zinc adhesion should not be less than 610g/m, that is, the average thickness of the zinc layer should not be less than 86 microns.

    perforated sheet metal speaker grill

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    perforated sheet metal speaker grill perforated sheet metal speaker grill

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