风管不得采用S型插条、C型直角插条及立联合角插条的连接方式。空气洁净等级为1～5级的风管不得采用按扣式咬口。
Air duct shall not be connected by S type cuttings, C right angle cuttings and vertical joint angle cuttings. The air hose with air cleaning grade 1~5 is not allowed to use snap snap.
净化空调系统风管的法兰铆钉间距应小于100 mm，空气洁净等级为1～5的风管法兰铆钉间距应小于65mm。
The distance between the flange and rivet of the air duct of the purifying air conditioning system should be less than 100 mm, and that between the flange and rivet of the air duct with the air purifying grade of 1-5 should be less than 65 mm.
风管内不得设置加固框或加固筋。
No reinforcement box or reinforcement should be installed in the wind pipe.
风管加工前应采用清洗液去除板材表面油污及积尘，清洗液应采用对板材表面无损害、干燥后不产生粉尘，且对人体无危害的中性清洁剂。
Cleaning fluid should be used to remove oil and dust on the surface of sheet metal before air duct processing. Cleaning fluid should be used as a neutral cleaner which is harmless to the surface of sheet metal, does not produce dust after drying, and does not harm to human body.
通风管道制作完毕应使用清洗液清洗，清洗后经白绸布擦拭检查达到要求后，酚醛板，应及时封口。
Ventilation pipes should be cleaned with cleaning fluid after production. After cleaning, the phenolic board should be sealed in time after it has been wiped and inspected by white silk cloth.
彩色涂层钢板风管的内壁应光滑;板材加工时不得损坏涂层，被损坏的部位应涂环氧树脂。
The inner wall of the color coated steel pipe shall be smooth; the coating shall not be damaged when the plate is processed, and the damaged part shall be coated with epoxy resin.
风管的咬口缝、铆接缝以及法兰翻边四角缝隙处，应按设计及洁净等级要求，采用涂密封胶或其他密封措施堵严。密封材料宜采用异丁基橡胶、氯丁橡胶、变性硅胶等为基材的材料。风管板材连接缝的密封面应设在风管壁的正压侧。
The bite seam, rivet seam and flange flange flange flange flange corner crack should be sealed by sealing glue or other sealing measures according to the design and cleanliness grade requirements. Sealing materials should be made of isobutyl rubber, neoprene, modified silica gel and other substrates. The sealing surface of the joint of the wind pipe plate should be located on the positive pressure side of the wind pipe wall.
风管制作场所应相对封闭，制作场地宜铺设不易产生灰尘的软性材料
The production area of the wind pipe should be relatively closed, and the production site should be paved with soft materials which are not easy to produce dust.
风管应减少纵向接缝，玻璃钢通风管道，且不得有横向接缝。
The longitudinal joints and FRP ventilation ducts should be reduced and no transverse joints should be allowed.
风管加工连接螺栓、螺母、垫圈和铆钉应采用镀锌或其他防腐措施，不得使用抽芯铆钉。
Connection bolts, nuts, washers and rivets for air duct processing shall be galvanized or other anticorrosive measures, and core-pulling rivets shall not be used.
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