drywall screw china

Plastic spraying is also we often talk about electrostatic powder spraying, it is the use of electrostatic generator to make plastic powder charged, adsorption on the surface of the iron plate, and then through 180~220 DEG C baking, so that the powder melting adhesion on the metal surface, plastic spraying products are used for indoor use of the box, paint film flat or matte effect. Spray powder mainly acrylic powder, polyester powder, etc.

According to the different requirements of the industry, different weights of alloy ingots are put in the smelting furnace according to the standard, such as weaving, Ming, paper, lang, silicon, etc., and the data out of this smelting is called gold ore iron. Iron has gray iron, white iron and the above-mentioned gold, they have different characteristics, so in the industry according to their different characteristics to transport and selection. For example, in gray iron, its carbon exists in iron ore in graphite condition, the crack is often gray, soft and strong, simple filtering, suitable for casting.

1, zinc pot workers to resolutely do duty and responsibility. Do not leave the post without permission, always observe the change of steel wire galvanized layer, and according to the analysis of the results, master asbestos block gap friction need how long to press, replace the pressing face; Adjust the working face; Until the four faces of the asbestos block are used up, maintenance workers continue to use it after repair when necessary to reduce the consumption of asbestos block.

Heavy hexagonal mesh is made of low carbon steel wire galvanized large wire braided, the tensile strength of steel wire is not less than 38kg/m2, the diameter of steel wire can reach 2.0mm-3.2mm, the surface of steel wire is usually hot galvanized protection, galvanized amount can reach 500g/m2.