通风管道的安装和制作是一个技术性很强的工作，以下是一些关键的要点：

The installation and production of ventilation ducts is a highly technical task, and the following are some key points:

风管材料选择：根据所需输送的气体类型和输送管道的距离确定通风管道的尺寸和材质。材料通常包括镀锌钢板、不锈钢板等，并且必须符合国家的安全标准和制造标准。

Material selection for air ducts: Determine the size and material of the ventilation ducts based on the type of gas to be transported and the distance between the ducts. The materials usually include galvanized steel plates, stainless steel plates, etc., and must comply with national safety standards and manufacturing standards.

风管厚度：普通通风管厚度为1.0mm，消防防排烟风管为。

Duct thickness: The thickness of ordinary ventilation ducts is 1.0mm, while that of fire protection and smoke exhaust ducts is.

风管制作准备：风管均采用内弧外直型；当风管长边≥500mm时，必须设置导流叶片。加工前根据图纸及现场具体情况，绘制风管加工图，作出风管加工计划。

Preparation for duct production: All ducts are of the inner arc and outer straight type; When the length of the air duct is ≥ 500mm, guide vanes must be installed. Before processing, draw a duct processing diagram and make a duct processing plan based on the drawings and specific on-site conditions.

风管下料：下料采用剪板机、联合咬口机、弯头咬口机、折方机加工、成形。风管咬口均匀，平、无凸瘤和虚咬现象。

Duct cutting: Cutting is carried out using shearing machines, joint biting machines, elbow biting machines, and folding machines for processing and forming. The bite of the air duct is uniform, flat, without protrusions or false bites.

法兰制作安装：法兰与风管轴线垂直，铆钉采用镀锌铆钉，铆钉间距均匀且不超过150mm，法兰翻边6～9mm，法兰与风管接触紧密，无孔洞及超皱现象。

Flange production and installation: The flange is perpendicular to the axis of the air duct, and galvanized rivets are used with uniform spacing of no more than 150mm. The flange flange is flanged by 6-9mm, and the flange is in close contact with the air duct without holes or wrinkles.

风管加固：按照设计图纸，采取在风管钢板上加工楞筋的方法加固。

Duct reinforcement: According to the design drawings, the method of reinforcing by processing ribs on the steel plate of the duct is adopted.

风管连接：风管连接应严密牢固，法兰的连接螺栓应均匀拧紧，螺母宜在同一侧。对于无法兰连接的风管，接口处应严密、牢固，矩形风管四角必须有定位及密封措施。

Air duct connection: The air duct connection should be tight and firm, the connecting bolts of the flange should be evenly tightened, and the nuts should be on the same side. For air ducts that cannot be connected by orchids, the interface should be tight and firm, and the corners of rectangular air ducts must have positioning and sealing measures.

风管安装就位：风管应保持清洁，管内不应有杂物和积尘。风管安装的位置、标高、走向，应符合设计要求。现场风管接口的配置应合理，不得缩小其有效截面。

Air duct installation in place: The air duct should be kept clean, and there should be no debris or dust inside the duct. The installation position, elevation, and direction of the air duct should meet the design requirements. The configuration of the on-site air duct interface should be reasonable and its effective cross-section should not be reduced.

风管排列无法兰连接：包括抱箍式连接、插接式连接、插条式连接和软管式连接等多种方式。

The arrangement of air ducts without flange connections includes various methods such as clamp connections, plug-in connections, strip connections, and hose connections.

风管系统安装：风管应垂直或倾斜敷设，倾斜敷设时，风管与水平夹角宜大于或等于45°。

Installation of air duct system: Air ducts should be laid vertically or diagonally. When laying diagonally, the angle between the air duct and the horizontal should be greater than or equal to 45 °.

风管与设备连接：风管与设备、风阀等连接时，宜采用角钢法兰。两法兰之间应使用密封性能良好、有一定弹性且符合相应耐火极限要求的垫料。

Connection between air ducts and equipment: When connecting air ducts and equipment, air valves, etc., angle steel flanges should be used. A gasket with good sealing performance, certain elasticity, and corresponding fire resistance limit requirements should be used between the two flanges.

非金属及复合材料风管：除无机玻璃钢风管，其他非金属及复合材料风管穿过需密封的楼板或墙体时，应采用金属短管连接或外包金属套管安装。

Non metallic and composite material air ducts: Except for inorganic fiberglass air ducts, other non-metallic and composite material air ducts that pass through sealed floors or walls should be connected with metal short pipes or installed with metal sleeves.

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