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

        Inspection and requirements of frameless fireproof glass in engineering application

        2020-03-09 2222

        The fire-resistant function of frameless fire-proof glass for building is obtained by directly inlaying frameless fire-proof glass in the wall hole or combined with the structure, and then inlaying it in the wall hole to make components according to gbl2513. It includes the determination of fire-resistant integrity, fire-resistant heat insulation and thermal radiation intensity. Meanwhile, the measurement of thermal insulation is based on the back fire surface temperature.

        Fire resistance and thermal insulation refers to the temperature rise of single point at the temperature measuring point on the back fire surface of the test piece of 180 ℃ and uniform temperature rise of 140 ℃.

        防火玻璃

        Thermal radiation intensity refers to the critical radiant heat illuminance reaching 0.42w/cm2 at 3M from the back fire surface of the test piece, and the critical radiant heat illuminance reaching 3.35 w / cm2 at a distance equal to 1.2 times its smaller standard (length or width). Fire resistance function test: the whole frameless fireproof glass shall be embedded in the fixed structure, and the fire resistance function test shall be carried out according to gb12513. The fire standard height of frameless fireproof glass shall not be less than 1100mm, the width shall not be less than 600mm, and the sample shall be vertical to the equipment. The fixed structure and equipment method used in the test shall be the same as that used in practical engineering, and the structure and equipment method of fixed structure shall be recorded in the method of drawings.

        Bending test: place the glass vertically, place a ruler horizontally close to the surface of the sample for measurement, and indicate it in the percentage of the ratio of the height of the arc to the length of the chord when it is arched; The waveform is indicated by the percentage of the ratio of the height from trough to peak to the distance from peak to peak (or trough to trough). The products shall be packed in wooden cases or other packing boxes. The glass shall be placed vertically in the box. Each glass shall be wrapped with plastic cloth or paper. The light and soft materials that are not easy to cause glass scratches and other appearance defects shall be used between the glass and the packing box.

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


        主站蜘蛛池模板: 欧美成人中文字幕| 老司机午夜精品视频无码 | 亚洲精品第一页不卡| 亚洲嫩模一区二区三区视频| 中国6一12呦女精品| 亚洲中文字幕精品久久久久久动漫| 国产亚洲av日韩av| 亚洲一区二区国产日韩| 人妻精品一区二区三区av| 达拉特旗| 久久中文字幕日韩精品| 亚洲最大无码AV网站观看| 欧美在线天堂| 日本欧美大码a在线观看| 久久青青草原精品国产app| 久久精品视频中文字幕无码| 盐亭县| 日韩精品一区二区三区四区视频| 亚洲无码观看a| 一区二区三区四区四色av| 久久久精品国产亚洲av日韩| 日韩精品一区二区三区中文9| 亚洲精品久久久中文字| 国产熟女自拍视频网站| 婷婷色国产精品视频一区| 夫の目の前侵犯新婚人妻| 中文字幕久久精品波多野结| 在线视频亚洲欧美| 91久久精品美女高潮不断| 亚洲中文字幕在线精品一区| 97精品国产91久久久久久久| 亚洲综合无码一区二区| 四虎永久在线精品国产免费| 日韩极品视频在线观看免费| 亚洲av男人的在线的天堂| 亚洲欧洲无码精品ⅤA| 久久综合九色欧美综合狠狠| 久久精品夜夜夜夜夜久久| 久久精品成人免费观看97| 国产伦精品一区二区三区四区| 国产成人啪精品视频免费APP|