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 key specifications for fireproof glass doors

        2020-03-23 2167

        Fireproof glass door is a widely equipped product in modern commercial construction. It has good transparent daylighting and fire resistance. It is used as an ordinary glass door in daily circumstances. Once a fire breaks out, it can effectively block the diffuse smoke, control the spread of the fire, and provide a valuable time for the escape from the fire and the development of remedial operations.

        In the specification of fire door, glass door is listed as fire door of other materials. Its specification is different from wood and steel door, and has its own advantages. The product selects metal as the structural manufacturing profile, and the interior is inlaid with fire-proof glass. On the premise that the metal structure meets the fire resistance requirements, all fire-proof functions of the door body should be judged based on the stability and integrity of glass fire resistance.

        The specification of fire-proof glass door shall list the thickness of structural manufacturing materials, process specifications, hardware equipment basis and glass characteristics, as well as the total fire resistance time, and the melting temperature of fire-proof hardware accessories shall not be lower than 950 ℃.

        防火玻璃門

        According to different manufacturing methods, fire-proof glass can be divided into thermal insulation type and non thermal insulation type. At present, the vast majority of glass fire doors are grouted fire-proof glass, which has good thermal insulation function, and the fire resistance time can reach 1.5 hours, which is satisfactory to the specification of fire-proof doors.

        The door body structure is made of galvanized or stainless steel plate. The appearance can be treated by baking paint and electroplating process. It is beautiful and generous. The product specification is large, which can reach about 3M. It can also be spliced with the fireproof partition to achieve the combined function of door couplet window.

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


        主站蜘蛛池模板: 国产日韩久久久久69影院| 隆昌县| 日韩在线精品在线观看| 97色人阁俺也去人人人人人| 久久熟女五十路一区二区| 在线观看国产三级av| 久久久久人妻精品一区5555| 乌苏市| 久久久精品中文字幕免费| 亚洲国产综合性感三级自拍 | 国产成人AV乱码免费观看 | 合山市| 2022AV一区在线| 亚洲一区二区国产精品视频| 国产女同一区二区在线| 狠狠色丁香婷婷久久综合2021| 少妇熟女淫荡丰满| 国产成品精品午夜视频| 隆回县| 铜川市| 毛片av在线尤物一区二区| 手机av男人天堂免费网址| 男女性搞视频网站免费| 制服无码在线第一页| 欧美丝袜秘书在线一区| 久久久精品中文字幕综合| 国产青青草自拍视频在线播放| 国内精品视频成人一区二区| 安远县| 霸州市| 欧美亚洲日韩国产人成在线播放 | 熟女少妇av免费观看| 亚洲成熟丰满熟妇高潮XXXXX| 久草精品手机视频在线观看| 日韩精品人妻中文字幕有码视频 | 99精品国产在热久久婷婷人| 杨幂国产精品一区二区| 亚洲人成网站18男男| 婷婷精品国产亚洲av| 亚洲国产精品成人久久av| 欧美洲精品亚洲精品中文字幕|