drywall screws for outdoor use

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  • In white iron, its carbon and iron together into iron carbide, crack appears white, very strong and brittle quality, for the material of malleable steel. The alloy grade consists of various alloying elements with different compositions and structures. Because alloying elements in iron ore can make copper through the material thickening degree of strengthening, hardness, impact force, strength resistance, closing rate, elongation, so alloying iron in the exercise of high quality iron, is the primary supplementary element.

  • Knitting is also divided into two types, one is the ordinary knitting type, the other is the knitting type of embossing. Embossing is not simply used for knitting, but patterns can also be woven to add beauty. In short, it is a variety of steel wire as raw materials, through the professional screen material technology processing. It is widely used, mainly in construction.

  • Paint on the galvanized layer, the binding force between each other and the baking temperature of the paint has a great relationship, after galvanized coating alkyd paint, adhesion is no problem. Galvanized amino paint, paint adhesion is not good. Do two bottom two surface, adhesion is ok, if the two bottom two surface to two bottom three surface, that is, more paint, more baking once, again test adhesion is very poor, poor to the paint from the galvanized layer of pieces torn off.

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