12/16/2013

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Steel Entrance Doors Of course, the main problem that has serious steel doors - this is the home of obereganie unauthorized penetration. Such protection is provided mainly structural feature steel doors: thickness and strength carbide sheet, profile shape, number and shape of the cross ribs and much more. It is also extremely important to lock the steel door. Can rightly claim that the locking device - a key element which is responsible for resistance to cracking intellectual schemes, such as the selection keys and master keys. Today, it is these types of effects, statistics, and subjected to more than 90 percent of steel doors. This means lock your steel doors - the main element of its reliability. If we compare foreign and domestic locks, we can say: The first stand out and Burglar resistance, and on time service. Unlike steel doors, domestic manufacturers have not yet learned to produce competitive locking devices. By design there are two types of locking devices mounted in a steel door and suvaldnye cylinder. Cylinder lock includes a cylinder vnutryanku that is evident from its very name. Regardless of the complexity of the design of the cylinder for locking devices of these types is recommended that you install bronenakladki, which protect the larva from the drilling and knocking. Cylinder locking devices for steel doors, which are also called safe deposit, have simplified the inner cylinder, but more durable and burglary with serious physical effects. Just cylinder locking device can be fitted with bolts, or deviators - that is, the spacer pins that lock the steel door in four directions. In Depending on the technology of the best set of steel doors two locks of different types. Finally, we consider a number of options, not related to safety, but responsible for more comfortable existence for steel door with a...
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Basis Polyurethane Curing the film in air can side reaction of isocyanate groups with water, leading eventually to the formation of urea linkages. The industry can be one and the same method to obtain different PU coating materials. For example, in the same pattern of production coatings, moisture curing, can be obtained on the basis of products alcoholysis of castor oil and glycerin, respectively, triethanolamine odnoupakovochnye dvuhupakovochnye and materials. To obtain two-component systems have found applications such as polyisocyanates, biuret-polyisocyanate how to cure without heating only in the presence of catalysts (octoate and naphthenate zinc). Coatings based on this have a lower hardness, but a good color - and weatherproof. The domestic industry produces aliphatic poliizo - cyanate, biuret based on hexamethylene diisocyanate and water. But they do not mix, so the water injected into the mixture with a solvent (dioxane or acetone). In the commercially available two-component system consisting of semi-finished products of enamel and a polyisocyanate curing agent mixed before use. Semi-finished enamel - suspension of pigments and fillers, additives to the target in a solution of resin. Hardeners are available in sets. Relatively new type of polyurethane coatings are aqueous compositions that are growing application, staining wood, plastic, metal and other materials. Especially popular are water dvuhupakovochnye polyurethanes. They are ideally suited for corrosion resistant coatings on metal. The major consumers of such materials are the automotive, automobile repair sector, as well as manufacturers of military equipment that use dvuhupakovochnye polyurethane dispersion with a volatile content less than 180 g / l, allowing form a thermo - and chemically resistant topcoat for aircraft and tactical weapons. The most common type of water paint for wood is a mixture of polyurethane dispersions and acrylic latexes, hybrid akriluretanovye dispersion and composition based on akriluretanov with particles of the core / shell....