cutting perforated metal sheet

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  • The material of steel structure will affect the organization and thickness of hot dip galvanized film. For example, high tension steel containing silicon, carbon content is high, easy to react with molten zinc quickly, the result of excessive growth of alloying, will cause a grayish black appearance, but does not affect its corrosion resistance. Or heat treated steel, if its tensile strength exceeds 90kg/mm2, after hot dip operation, easy to reduce its strength, etc.

  • Reverse twist: Twist the barbed wire in the opposite direction from where the nematocyst is wound around the main wire. It’s not twisted in one direction. It’s called the reverse twist.

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