coarse thread drywall screws

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  • When the zinc layer is seriously damaged and endangers the iron matrix, the zinc will produce electrochemical protection on the matrix, the standard potential of zinc is -0.76V and the standard potential of iron is -0.44V. When zinc and iron form microbatteries, the zinc will be dissolved as the anode, and the iron will be protected as the cathode. Obviously, the atmospheric corrosion resistance of hot dip galvanizing is better than that of electric galvanizing.

  • The basic requirements are the flatness of the net surface, hook mesh first after weaving, weaving process, rolling flowers can not turn, to adhere to smooth, can not present wire or turn flowers.

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