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

        2020-09-04 2727

        The fire-resistant function of frameless fire-proof glass for construction is obtained by embedding frameless fire-proof glass directly in the wall hole or combined with the structure, and then embedded 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 of 0.42w/cm2 at 3M away from the back fire surface of the test piece, and the critical radiant heat illuminance of 3.35 w / cm2 at an interval equal to 1.2 times its smaller scale (length or width) from the back fire surface of the test piece. 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 resistance scale of frameless fireproof glass shall not be less than 1100mm high and 600mm wide, and the sample shall be straight. The fixed structure and device method used in the experiment shall be the same as the structure used in the actual project, and the structure and device method of the fixed structure shall be recorded in the way of drawings.

        Bending test: place the glass pen vertically, place the 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 interval from peak to peak (or trough to trough). The products shall be packed in wooden cases or other packing boxes. The glass pen 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 filled between the glass and the packing box.

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


        主站蜘蛛池模板: 日本一区二区三区专区| 中文字幕一区二区三区97| 精品人妻一区二区三区中文久久| 国产av一区二区三区丝袜| 亚洲区精品久久一区二区三区女同| 视频网站在线观看不卡| 无码AV大香线蕉伊人久久| 免费国产h视频在线观看86| 亚洲综合自拍偷拍视频 | 五月天无码| 蜜桃一区二区三区在线看| 在线成人看片免费播放视频| 乌审旗| 国产三级国产精品三级在专区| 国产真实二区一区在线亚洲| 中文人妻av大区中文不卡| 游戏| 鄂托克前旗| 屏山县| 免费视频这里是精品视频| 国产亚洲一区二区三区夜夜骚| bbbbbxxxxx欧美性| 男女日比免费观看视频| 久久亚洲精品成人AV无码网址| 日韩高清av一区二区| 国产喷白浆精品一区二区| 99在线无码精品秘 入口九色| 阜宁县| 国产成人精品亚洲日本在| 进贤县| 伊人色综合九久久天天蜜桃| 久久精品女人天堂av影院| 桦南县| 亚洲午夜久久久久中文字幕久 | 阳高县| 含山县| 亚洲一区二区三区久久综合| 宁武县| 超清无码AV丝袜片在线观看| 亚洲中文字幕av天堂| 香蕉亚洲欧洲在线一区|