The security window refers to a mesh door and window with anti-theft protection function based on the original window of the building. Common types of security windows are divided into materials: stainless steel security window, color steel security window, wrought iron security window, aluminum alloy security window, zinc steel security window, steel-plastic composite security window, etc.; And a movable multi-function sliding security window.
According to the national “Eleventh Five-Year†development plan, the color steel anti-theft window double-flower push-pull security window establishes a major policy of energy-saving, environmental protection and economical society. Building energy conservation is listed as the top priority in building a conservation-oriented society. Building doors and windows account for about 50% of the building's energy efficiency, showing that doors and windows are the key to building energy efficiency. This product is under the premise of the state's strong advocacy, summed up the ordinary window is not insulated, not insulated, not anti-theft, small amount of ventilation, high building vertigo danger, unsafe glass cleaning, installation of anti-theft network mess, easy to thieves, affect Shortcomings such as neighbor relationships. The anti-theft blinds not only solve these problems, but also further improve the function, and have passed the national construction engineering quality inspection, which fully meets the requirements of national building energy conservation.
The Tape Measure is too deformed and will not fail. Why didn't it fail? The spring in the tape measure is very long, and it is completely relaxed to completely tighten the range. The entire stroke of the tape measure includes it, and there is margin at both ends, so the tape measure will not fail.
There is no difference in tension between a one-meter length and a two-meter length; the spring of the tape measure is very thin, and the amount of deformation when it is tightened is very small, so the reaction force is very small, and no force change is felt when the rule is pulled.
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