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  • Post time: 11-11-22

    big head drywall screws

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  • 3, reduce the bivalent iron ion in the plating aid used for hot plating wire, reduce the formation of zinc slag

    big head drywall screws

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    big head drywall screws big head drywall screws

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  • Bridge protection system generally do not need to be specially installed special drainage system, the use of hexagonal mesh made of gabion mesh boxes, the inside of the filler are selected stones, these stones are not easy to wear, and between the stones and stones will retain some gaps, so it is very good to meet the drainage requirements.

    big head drywall screws

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  • Poor pretreatment before plating; Bath temperature is too low; Poor quality of additives or too many additives and organic impurities will cause poor bonding. The quality of additives also has an effect on coating foaming. Some additives react incompletely during synthesis and continue to polymerize during long-term storage or use. The additive tends to distort the crystal lattice and cause stress, causing the coating to bubble.

    big head drywall screws

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    big head drywall screws big head drywall screws

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  • big head drywall screws

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  • If the coating roughness is not caused by the above reasons, it may be caused by impurities in the plating solution. Can take a small amount of electroplating solution, filtration test, and then take a small amount of electroplating solution, with zinc powder treatment after the test, check the problem is solid particles or copper, lead and other foreign metal impurities caused by. One by one, it’s not hard to find the cause of the problem. Galvanized iron wire coating blister, poor adhesion.

    big head drywall screws

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