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

        Functions and characteristics of fireproof glass doors

        2020-11-02 2693

        According to the new national decree, fire doors have been listed as one of the products of fire protection system. Fireproof glass door is a kind of fireproof door. However, the fireproof glass door is different from the general fireproof door, its appearance plasticity is strong, and can produce a more beautiful appearance. Therefore, the fireproof glass door can be used not only in fire passages and public places, but also in indoor decoration, which is beautiful and.


        I. functions and features of fireproof glass doors


        1. High fire resistance: high fire resistance is an outstanding advantage of fireproof glass doors. The glass of fire-proof glass door belongs to fire-proof glass. This glass is obtained by using float glass through physical and chemical reaction. It can be burned in the flame and will not explode or melt within a certain time.


        2. High weather resistance: the fireproof glass door can withstand the sun and rain, and can withstand the baptism of months and years. It can shine through the ultraviolet light, its appearance and function will not be affected, and can maintain a transparent and bright visual effect.


        3. The of glass is our concern. It can be said that the fire-proof glass door is a relatively glass door, and the hardness of fire-proof glass is 6-12 times that of float glass; It is 2-3 times that of tempered glass. The fire-proof glass is in an obtuse angle after being broken, and the fragments are smaller than those of tempered glass, which can reduce the damage to people.


        II. Distinction of fireproof glass doors


        Fire resistant glass doors are classified according to different standards, and their statements will be different.


        According to the classification of fire resistance function and heat insulation function, it is mainly divided into class A, class B and class C. Class a fireproof glass door refers to the two functions of fire resistance and heat insulation, mainly composite type and pouring type. These two products not only have fire resistance and heat insulation functions, but also have the characteristics of light transmission, smoke separation and sound insulation. They can be applied to doors, windows, transparent floors and other places. Class B fireproof glass is required to have fire resistance. Composite glass is widely produced and used in the market, which has the function of smoke separation and fire prevention. Of course, its function cannot be comparable with class A. Class C fireproof glass door is a single piece of fireproof glass, which only has the function of fire resistance. Its advantages are high strength, smoke isolation, and the defect is that it cannot be insulated. This kind of fireproof glass door is economical and can be used as fireproof window and outdoor curtain wall.

        防火玻璃門

        III. key points for attention when using fireproof glass doors


        According to the new national standard GB16809-2008 "fire windows" issued in 2008, it is required that the home decoration profession needs to install fire windows and fire-proof glass. Gradually apply the fire-proof glass door to the home decoration profession, but our understanding of the fire-proof glass door is not deep enough to recognize its importance. We must not have the mentality that the installation does not matter and everything is fine on the installation.


        The manufacturer shall be selected for the fireproof glass door of the device, and the inspection certificate of the manufacturer shall be seen. Together, the fireproof glass door can not be regarded as a single fireproof material, but should be treated as a fireproof system. The type of fireproof glass door to be selected shall be determined after consulting the relevant manufacturer.


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


        主站蜘蛛池模板: 精品中文字幕手机在线 | 免费在线日韩| 亚洲欧洲AV综合色无码| 垣曲县| 久久精品国产亚洲AV古装片| 国产精品激情综合久久| 国产精品久久狼人一区| 精品四十色区在线视频| 国内精品国产三级国产av另类 | 修文县| 亚洲熟妇少妇一区二区三区| 亚洲成熟丰满熟妇高潮XXXXX| 人妻无码一区二区19P| 99久久久久久亚洲精品| 久久精品成人亚洲另类欧美| 国产一区二区三区精品久久呦| 国产成人啪精品视频免费网| 伊人影院在线观看不卡| 欧美日韩中文字幕日韩欧美| 男人的天堂av一二三区| 自拍视频国产在线观看| 日韩高清av一区二区| 亚洲无码图| 国产色婷婷亚洲99精品| 日本护士一区二区三区高清热线| a级日本理论片免费观看| www久久久888| 国产在线精品免费av| 国产精品国产自线拍免费| 国产精品中文第一字幕| 国产成人亚洲欧美三区综合| 国产精品天堂蜜av在线播放| 午夜一区二区三区av| 激情五月天俺也去综合网| 亚洲中中文字幕第一页| 蜜桃视频色版在线观看| 九色精品国产亚洲av麻豆一 | 汶上县| 海淀区| 中文字幕亚洲国产精品| 亚洲高清精品50路|