how to use a drywall screw

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  • The key and important parts with tensile strength greater than 1034Mpa should be relieved of stress at 200±10℃ for more than 1 hour before plating, and the carburized or surface hardened parts should be relieved of stress 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.
  • 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, after filtration test, then take a small amount of electroplating solution, after zinc powder treatment test, check the problem is caused by solid particles or copper, lead and other foreign metal impurities. Test them one by one and it’s not hard to find the cause of the problem. Galvanized iron wire coating foaming, binding force is not good.

  • And the role of wire mesh in the exterior wall plastering if from an Angle of anti-falling method, the effect of anti-cracking is relatively small, because of the azimuth problem; And about the external insulation system is used in the brick veneer, as for the role should also be anti-drop followed by anti-cracking, so we should choose the grid 10×10×0.6, these are some experience selection, the conversion of the grid comes from the national standards of steel wire mesh, the selection of steel content of the grade conversion.
  • There is: positive and negative twisting barbed rope high service life
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