亚洲精品鲁一鲁一区二区三区-最爽无遮挡行房视频-强壮的公次次弄得我高潮A片日本-精品人妻无码一区二区三区换脸-中文字幕亚韩-亚洲国产精品一区二区第一页-丰满岳乱妇一区二区三区-大陆极品少妇内射AAAAAA-国产乱人伦AV麻豆网-AV国産精品毛片一区二区三区-午夜精品视频在线无码-免费精品一区二区三区A片在线-在线天堂无限次观看,亚洲日韩无码一区二区,中文字幕乱人伦视频在线,亚洲欧美熟妇综合久久久久久,少妇无码一区二区三区免费久久,欧美黑人一级片在线观看,久久久精品无码一区三区,国产视频在线观看蜜芽,大香蕉五月婷婷精品视频 ,久草精品在线,国产无码在线播放一区二区,囯产无码交换大片在线播放,八戒八戒在线高清观看视频 ,娇妻被又粗又长又猛玩,国产曰肥老太婆无遮挡,国产剧情黄色,国产成年无码久久久久毛片資訊,大香蕉太香蕉成人现现,逼逼爱爱爱无码免费观看,亚州色图欧美图片自偷自拍,碰碰视频麻豆,午夜一本,一起射综合影院,黑人干熟女,欧洲高清转码区一二区 ,国产高清视频色拍,粉嫩无码小泬无套在线观看,大香蕉在线网站,成人做爰理论片,成人漫,9l视频自拍九色9l成人

Check the quality of materials: Ensure that the materials used meet the quality requirements and have factory certification or quality appraisal documents. For sheet metal, the surface should be checked for flatness, uniform thickness, no unevenness or obvious indentation, and there should be no cracks, sand holes, scars, burrs, or rust. For steel materials, it should be ensured that they are of equal shape, uniform, and free from defects such as cracks, bubbles, and cavities that affect quality.

制作金屬風管和管件：風管和配件表面應平整，圓弧均勻，縱向接縫應錯開。咬口縫應緊密，寬度均勻。焊縫應做外觀檢查，不應有氣孔、砂眼、夾渣、裂縫等缺陷，焊接后鋼板的變形應矯正。風道系統內所有直角轉彎處均安裝消聲彎頭，消聲彎頭內設鍍鋅鐵板導流片。

Making metal air ducts and fittings: The surface of the air ducts and fittings should be flat, with even arcs, and longitudinal joints should be staggered. The bite seam should be tight and uniform in width. The weld seam should undergo visual inspection, and there should be no defects such as pores, sand holes, slag inclusions, cracks, etc. The deformation of the steel plate after welding should be corrected. All right angle turns in the air duct system are equipped with silencing elbows, and galvanized iron plate guide vanes are installed inside the silencing elbows.

風道加固：矩形風管邊長大于或等于630mm和保溫風管邊長大于或等于800mm，其管段長度在1.2m以上的均應采取加固措施。

Air duct reinforcement: For rectangular air ducts with a side length greater than or equal to 630mm and insulated air ducts with a side length greater than or equal to 800mm, reinforcement measures should be taken for duct sections with a length of more than 1.2m.

外觀質量檢查：風管咬口縫結合要緊密，咬口縫寬度要均勻。外觀檢查要包括風管和配件的表面平整度，圓弧的均勻度，縱向接縫的錯開情況等。

Appearance quality inspection: The bite seam of the air duct should be tightly bonded, and the width of the bite seam should be uniform. The appearance inspection should include the surface flatness of the air duct and accessories, the uniformity of the arc, and the misalignment of the longitudinal joints.

安裝方向調整：風道的安裝方向應平直，主風道安裝不直度小于等于1.5mm/米，不平度小于等于1mm/米。

Installation direction adjustment: The installation direction of the air duct should be straight, and the installation unevenness of the main air duct should be less than or equal to 1.5mm/m, and the unevenness should be less than or equal to 1mm/m.

保溫層制作與安裝：保溫層一般由聚苯乙烯泡沫板制成，其密度為40kg/立方米，厚度35mm。保溫層邊部接合部位應采用梯臺或榫槽結構，用樹脂粘貼，外表面用鋁箔布裹住，用熱敏膠帶粘貼嚴密。保溫層制作完成后，需要使用鋁箔布進行包裹。

Fabrication and installation of thermal insulation layer: the thermal insulation layer is generally made of polystyrene foam board, with a density of 40kg/m3 and a thickness of 35mm. The edge joint of the insulation layer should adopt a ladder or tenon groove structure, which should be pasted with resin. The outer surface should be wrapped with aluminum foil cloth and tightly pasted with thermosensitive tape. After the insulation layer is completed, it needs to be wrapped with aluminum foil cloth.

風道連接：通風管道一般采用機械咬口的方式進行連接，以保證接口的嚴密性。在接口處可以使用橡膠密封條進行密封。

Air duct connection: Ventilation ducts are generally connected by mechanical biting to ensure the tightness of the interface. Rubber sealing strips can be used at the interface for sealing.

調試與驗收：在完成通風管道的安裝后，需要進行調試和驗收。調試時需要檢查通風管道的氣密性，確保沒有漏氣現象。同時還需要檢查通風管道的通風效果，確保滿足設計要求。在驗收過程中需要對安裝質量進行檢查，確保符合規范要求。

Debugging and acceptance: After completing the installation of the ventilation pipeline, debugging and acceptance are required. During debugging, it is necessary to check the airtightness of the ventilation pipeline to ensure that there is no air leakage. At the same time, it is necessary to check the ventilation effect of the ventilation ducts to ensure that they meet the design requirements. During the acceptance process, it is necessary to inspect the installation quality to ensure compliance with regulatory requirements.