神马av_日韩第一页_免费精品一区_神马AV_神马久久久久久久久_日韩无码第一页_色哒哒_无码人妻熟妇av又粗又_国产69久久久欧美黑人A片_日韩欧美亚洲_无码第一页_神马午夜精品91_无码人妻熟妇av又粗,日韩免费人妻无码专区蜜桃,亚洲阿大香蕉,欧美亚洲男人天堂,国产无码精品一区二区,揉着我的奶从后面进去视频,免费全部黄A片免费播放软件,国产色中色,免费看的久久久久,天美传媒部在线观看,久久久久久亚洲综合,大香蕉日韩成人在线视频,久久无码潮喷A片无码高潮动漫,精品久久亚洲熟女,国产欧美精品aaaaa久久,直男国产飞机杯,我的公把我弄高潮了视频,免费的精品一区二区三区片,国产日韩欧美三级,亚州A级片,自拍偷拍亚洲porn,少妇水多A片太爽了,日本久操,成人午夜福利无码不卡视频,国产一区二区不卡亚洲涩情,日韩欧美亚洲综合久久,国产亚洲精品久久孕妇呦呦你懂,国产又粗又长又大精品A片,自偷自拍亚洲综合精品第一页,亚洲欧美熟妇久久久久久久久 ,香蕉视频操逼奶子

　　The processing of Jinan air duct is mainly composed of corner codes, clamps and connectors connected with the air duct as a whole. Although the cost of this kind of air duct is relatively low and the consumption of angle steel is reduced, its strength is not as good as that of angle steel in practical application, and the air leakage is also relatively large. It has to be machined. It is difficult to make by hand. It is usually only used for fresh air system, air conditioning system, etc. The smoke exhaust system is still an air pipe connected by angle steel. But the civil air defense project is absolutely not allowed to use the common board connection.

　　風管制作過程中的材料要求相當的講究。當風管表面為鋁箔時，為了保證表面不容易損壞，精選了鋁箔材料和厚度，并精選了由鋁箔和增強材料組成的風管表面的鋁箔厚度。

　　The material requirements in the air duct manufacturing process are quite exquisite. When the air duct surface is aluminum foil, in order to ensure that the surface is not easy to damage, the aluminum foil material and thickness are specified, and the aluminum foil thickness of the air duct surface composed of aluminum foil and reinforcement material is specified.

　　薄鋼板通風管道內外保溫材料的粘結是保證復合材料的基本條件之一。板在一定范圍內的缺陷不僅會影響風管的使用壽命，而且會降低風管的保溫效果。因此，該缺陷建議不超過6，以實現材料在系統中的正常使用。

　　One of the basic conditions to ensure the composite material is the bonding of the internal and external insulation materials of the thin steel ventilation pipe. The defects of the plate in a certain range will not only affect the service life of the air duct, but also reduce the insulation effect of the air duct. Therefore, the defect must not exceed 6 to achieve the normal use of materials in the system.

　　非金屬風管材料發展迅速，品種繁多。由于它們的特點和優點，得到了越來越廣泛的應用。為了保證使用的保證，根據工程需要，建議這些材料制成的風管應具有不燃或不燃B1的燃燒性能要求，表層建議是不燃材料。根據多年的工程實踐和我國產品的現狀，對熱壓帶的小剝離強度和鋁箔厚度的測試值進行了規定。膠帶寬度要求不小于50mm，以防止膠帶不能滿足壁封強度和管道使用壽命。熱粘帶的優點是它依賴于熱熔粘合。只要不加熱，膠粘劑的表面在室溫下固化，并具有良好的粘接強度。

　　Nonmetal air duct materials develop rapidly and have many kinds. Because of their characteristics and advantages, they have been more and more widely used. In order to ensure the use, according to the engineering needs, it is suggested that the air ducts made of these materials should have the combustion performance requirements of non combustible or non combustible B1, and the surface must be non combustible materials. According to the engineering practice for many years and the current situation of the products in China, the test values of the small peel strength and the thickness of the aluminum foil of the hot pressed strip are specified. The width of the tape shall not be less than 50mm to prevent the tape from failing to meet the wall sealing strength and the service life of the pipeline. The advantage of hot adhesive tape is that it depends on hot-melt bonding. As long as it is not heated, the surface of the adhesive solidifies at room temperature and has a strong bonding strength.

　　風道加工是通風空調系統的重要組成部分。它們大多由管道加工設備制成，如管道生產線。然而，由于各種原因，風管處理設備處理的風管可能會出現問題。

　　Air duct processing is an important part of ventilation and air conditioning system. Most of them are made by pipeline processing equipment, such as pipeline production line. However, for a variety of reasons, there may be problems with the ducts handled by the duct handling equipment.