美国黄色片一区二区三区,欧美韩日亚洲影视在线视频,国产人妻大战黑人20p,免费无码又爽又刺激高潮的视频免费 ,国产在线丝袜精品一区免费,国禁国产you女视频网站,少女たちよ在线观看动漫4,免费啪啪视频一区

        Introduction to common specifications of fireproof glass doors

        2019-09-20 2110

        With the progress of the times, the quality of human life is getting better and better. The things used not only depend on the function, but also beautiful. As we can see in the days, the function of fire-proof glass door is fire prevention, but if it is a dark door, it will really affect the beauty. The design of the fire door can not only ensure the real fire situation, but also ensure that the fire door can be added to the other side. However, there are many standards for fire-proof glass doors in the days. Whether to apply appropriate and formal standards will affect the quality and fire-proof function of the door. Are you right?

        I. varieties of fireproof glass doors

        Generally, float glass and toughened glass are selected as fire-proof glass. They are fire-proof materials that can control the extension of fire and isolate smoke. They are fire-resistant and heat-insulating. There are five kinds of fire-proof glass, namely laminated composite fire-proof glass, wired fire-proof glass, special fire-proof glass, hollow fire-proof glass and high-strength single-layer cesium potassium fire-proof glass. In the meantime, according to the variety of products, it can be divided into three types. Class A has complete fire resistance and heat insulation function and can block heat radiation; Class B can resist fire and block high-intensity thermal radiation; Class C has the function of fire resistance, but it is not insulated. Fireproof glass doors are produced in categories A, B and C.

        防火玻璃門

        II. Common standards

        There are many standard varieties of fire-proof glass. Fire-proof glass doors are divided into three grades: A, B and C, which have good fire prevention effect. Meanwhile, class C fireproof glass door is composed of single piece of fireproof glass. It is a kind of special glass. Its strength is higher than that of float glass. The installation method is simple and easy. Generally, the large scale that can be produced is 2400mm × 5000mm, 200mm small × 300mm。 Class a fireproof glass door is composed of composite fireproof glass. It has good heat insulation and sound insulation performance and high visibility. The large scale that can be produced is 1800mm × 3000mm, small scale 100mm × 100mm。

        III. precautions

        Class a fire-proof glass doors cannot be directly exposed to sunlight for a long time, which will make them aging, which will reduce the service life and affect its function. These fire-proof glass doors cannot be cut, drilled or polished after processing and forming.

        In a word, fireproof glass doors have been widely used in our daily life, and there are many standards, application methods and things that need to be paid attention to. When we use them, we should also spread relevant common sense to prevent unwanted accidents in the process of application.

        Article source: fireproof glass door http://www.wan-xin.net/


        主站蜘蛛池模板: 精品久久精品午夜精品久久| 青阳县| 久久久久久久久中文字幕| 长沙县| 丝袜美腿网站一区二区| 欧美h久免费女| 国产一区亚洲欧美成人| 一本色道久久综合狠狠躁中文| 沾益县| 视频精品亚洲一区二区| 亚洲视频中文字幕第一页| 免費一级欧美精品| 久久亚洲一级av一片| 偷拍自拍视频一区二区三区| 蜜臀av一区二区国产在线| 克什克腾旗| 精品在免费线中文字幕久久| 昆明市| 尼玛县| 沂南县| 望谟县| 兴城市| 安新县| 亚洲无码毛片免费视频在线观看| 欧美日韩国产在线成人网| 古田县| 熟女丝袜美腿亚洲一区二区三区 | 亚洲精品一区二区三区播放| 草莓视频中文字幕人妻系列| 亚洲欧洲综合有码无码| 国产主播无套内射一区| av狼人婷婷久久亚洲综合| 蜜桃视频在线观看网站免费| 日本护士一区二区三区高清热线| 日韩精品一区二区三区四区视频| 91青青草久久| 精品粉嫩国产一区二区三区| 国产香蕉一区二区三区| 成人综合亚洲欧美一区h| 亚洲视频在线观看二区三区| 亚洲中文字幕av一区二区三区人|