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

        What are the functions of fireproof glass doors in case of fire

        2020-06-29 2253

        At present, fire windows are used in all projects, which has brought a great degree of maintenance to our life. The glass used in the fire windows produced by the manufacturer is fire-proof glass, which plays a major role in controlling the extension of fire or smoke separation. It is a measure type fire-proof material, and its fire-proof function is evaluated by fire-proof function. This material is a special glass that can maintain its integrity and heat insulation in the regular fire resistance test through process processing and treatment. The original piece of glass in Chengdu glass doors and windows can be made of float plane glass, tempered glass, composite fireproof glass, or single piece of fireproof glass. The classification of fireproof products is different, and fireproof glass is no exception.

        According to fire resistance function

        Insulated fireproof glass (Class A), non insulated fireproof glass (Class C) and partially insulated fireproof glass (class B).

        Class A

        At the same time, fireproof glass meeting the requirements of fire integrity, fire resistance and heat insulation. It includes composite fire-proof glass and cast-in-place fire-proof glass. This kind of glass has the functions of light transmission, fire prevention (smoke, fire and heat radiation), sound insulation and impact. It is suitable for the construction and decoration of steel wood fire doors, windows, upper lighting, partition walls, daylighting roofs, smoke retaining vertical walls, perspective floors and other building components that need to be both transparent and fire-proof.

        防火玻璃門

        Class B

        At the same time, fire-proof glass meeting the requirements of fire integrity and thermal radiation intensity. This kind of fireproof glass is mostly composite fireproof glass, which has the characteristics of light transmission, fire prevention and smoke separation.

        Class C

        Only single piece fireproof glass satisfying the requirements of fire resistance integrity. This kind of glass has the characteristics of light transmission, fire prevention, smoke separation and high strength. It is applicable to fireproof glass partition walls, fireproof windows, outdoor curtain walls, etc. without thermal insulation requirements.

        According to fire resistance

        According to fire resistance5個等級:0.5h、1.00h、1.50h、2.00h、3.00h。

        In order to meet the fire protection requirements required by the state, the scale, appearance quality, optical strength and impact capacity of fire-proof windows should comply with the national rules. All kinds of fire-proof glass products should pass the testing of various inspection centers, reach the qualified specifications, and then issue the product qualification certificate. In the future, they can enter the stage of sales and installation.

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


        主站蜘蛛池模板: 亚洲天堂av免费在线看| 国产无套露脸| 日本丰满少妇高潮呻吟| 亚洲美女一区二区三区| 欧美亚洲另类制服卡通动漫| 国产精品av在线一区二区三区| 国产精品乱码一二三区| av国产熟妇露脸在线观看| 国产偷闻隔壁人妻内裤av| 亚洲一区二区三区av链接| 色伦专区97中文字幕| 国产精品极品美女免费观看| 欧美高清一区三区在线专区| 少妇高潮惨叫久久久久电影| 大连市| 被欺辱的高贵人妻被中出| 国产极品喷水视频| 久久精品无码专区免费青青| 91免费片| 性色av一区二区三区夜夜嗨| 亚洲一区二区精品久久岳| 亚洲人av毛片一区二区| 欧美色图50p| 无码流畅无码福利午夜| 亚洲国产精品国自产拍av| 人人揉揉揉香蕉大免费| 来凤县| 国产欧美久久久精品影院| 粉色视频播放| 精品国产一区二区三区在线观看 | 久久精品中文字幕亚洲| 亚洲精品在线第一页| 免费a级毛片无码a∨免费| 亚洲美女av一区二区| 性欧美视频videos6一9| 久久国产亚洲精品赲碰热| 男人的av一区二区资源| 揄拍成人国产精品视频| 国产成人精品男人的天堂网站| 亚洲乱码精品久久久久..| 一本久道久久综合狠狠躁av|