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2022-11-12
【概要描述】隨著溫度的升高，鋼的屈服應(yīng)力降低，相關(guān)曲線接近倒S形。一般鋼的強(qiáng)度在500左右急劇下降。根據(jù)不同的鋼結(jié)構(gòu)設(shè)計(jì)要求，達(dá)到鋼材破壞的結(jié)構(gòu)強(qiáng)度的溫度稱為核心溫度。通常裸鋼5~10 min即可達(dá)到芯溫。受防火涂料保護(hù)的鋼結(jié)構(gòu)可以大大延長(zhǎng)達(dá)到核心溫度的時(shí)間，從而贏得消防、疏散、逃生和危險(xiǎn)情況救援的時(shí)間。 ……
2021-09-13
How to see the scale of the exterior wall real stone paint manufacturer? In today's society, as the number of users buying real stone paint for exterior walls is particularly large, manufacturers that manufacture and wholesale products have sprung up,
2021-09-13
According to reports, a new type of interior and exterior wall paint with zero VOC (volatile organic compound), zero formaldehyde, and zero heavy metal characteristics has passed the national expert appraisal of new product achievements in Beijing. Expert
2021-09-13
Since August 2011, the coatings began to implement the "14 National Mandatory Standards", which directly pointed to the chaotic sales of the coatings industry, the poor quality of coatings and paint products, and the counterfeit and inferior phe
2021-09-13
1. Sample preparation: Use the selected resin and the leveling agent to be selected, according to the recommended range of dosage, divide the work curve into eq……
2021-09-13
Based on the in-depth and meticulous study of colors by scientists and psychologists, Vermek Floor came to the conclusion that "color can cure diseases". Experiments have shown that colorful colors will become a kind of "nutrient" that
2021-09-13
Heavy-duty anti-corrosion coating: refers to a type of anti-corrosion coating that can be applied in a relatively harsh corrosive environment compared with conventional anti-corrosion coatings and has a longer protection period than conventional anti-corr
2021-09-13
Since the Ministry of Public Security and the Ministry of Housing and Urban-Rural Development jointly issued the "Interim Regulations on Fire Protection for External Thermal Insulation Systems and Exterior Wall Decorations of Civil Buildings", t
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