通风管道的资料：可用作风管资料的有薄钢板、胶合板、纤维板、砖及混凝土等。薄钢板是常用的资料，它分普通钢板和镀锌钢板两种，普通通风空调系统采用厚度为0．5－1．5mm的钢板。聚氯乙烯板也可作为风管资料，它光亮，不积尘，耐腐蚀，在净化空调工程中有时被采用。但其造价和施工装置费用大。近年来，还有用经过外表处置的玻璃纤维板作风管资料的，它兼有消声和保温的效果。
Ventilation duct information: Thin steel sheet, plywood, fiberboard, brick and concrete can be used as air duct information. Thin steel sheet is the most commonly used material. It is divided into ordinary steel sheet and galvanized steel sheet. Steel sheet with thickness of 0.5-1.5mm is used in general ventilation and air conditioning system. PVC board can also be used as air duct data. It is bright, dust-free and corrosion-resistant. It is sometimes used in air-conditioning projects. But the cost of construction and installation is high. In recent years, there is also the use of exterior disposal of glass fibreboard wind pipe data, it has both noise and thermal insulation effect.
1、薄钢板风管。用薄钢板制造通风管道，以采用低碳钢板为宜，以冷轧钢板适用于通风与空调工程。
1. Sheet steel air duct. It is advisable to use low carbon steel sheet to make ventilation pipes with thin steel sheet, and cold rolled steel sheet is most suitable for ventilation and air conditioning engineering.
厚度在1．2mm以内的薄钢板风管采用咬口衔接，厚度2mm以内时采用焊接。依据有关规则，薄钢板风管与镀锌钢板风管，当矩形风管边长≥630mm和保温风管边长≥800mm，其管段长度在1．2mm以上的均应采取加固措施。普通运用角钢加固风管，边有采用起高接头（立咬口〕或在风管管壁上滚槽压出凸棱等加固办法。风管与风管衔接普通采用角钢或扁钢法兰。
The thin steel plate air duct with thickness less than 1.2mm is joined by bite and welded with thickness less than 2mm. According to the relevant rules, when the side length of rectangular air duct is greater than 630 mm and the side length of insulating air duct is longer than 800 mm, the reinforcing measures should be taken for both thin steel air duct and galvanized steel air duct. Angle steel is usually used to reinforce air duct, and some reinforcement methods, such as lifting joint (vertical bite) or rolling groove on the wall of air duct, are used to reinforce the air duct. Angle steel or flat steel flange is usually used to connect air duct with air duct.
2、镀锌钢板风管。镀锌钢板施工时应留意使镀锌层不受毁坏，应采用咬口和铆接。
2. Galvanized steel air duct. During the construction of galvanized steel sheet, attention should be paid to keeping the galvanized layer from being destroyed, and bite and riveting should be adopted.
3、不锈钢板风管。在加工时应避免板材外表产生划痕刮伤和凹陷等缺陷，且不得用铁锤敲打，防止毁坏合金元素的晶体构造，否则被铁锤敲击处会呈现腐蚀中心。不锈钢的强度较高、弹性好，当管壁厚度大于0．8mm时，普通采用焊接，厚度在0．8mm以下时，采用咬口衔接。不锈钢风管衔接运用的法兰，普通是把不锈钢板剪成条形，矩形法兰可按尺寸采用焊接，圆形法兰则采用冷弯法加工。
3. Stainless steel plate air duct. In processing, scratches, scratches and depressions on the surface of the sheet should be avoided, and hammers should not be used to knock, so as to prevent the destruction of the crystal structure of alloy elements, otherwise there will be corrosion centers where hammers strike. Stainless steel has high strength and good elasticity. When the thickness of pipe wall is more than 0.8mm, welding is usually used. When the thickness is less than 0.8mm, bite joint is used. The flanges used for connecting stainless steel air ducts are usually cut into strips, rectangular flanges can be welded according to size, and circular flanges are processed by cold bending method.
4、铝板风管。在摩擦时不会产生火花，故常用于防爆通风系统。
4. Aluminum plate air duct. Sparks do not occur when friction occurs, so they are often used in explosion-proof ventilation systems.
风管的咬口成型应尽量采用木锤或木方尺。为防止咬口缝变形，好运用机械成型。当铝板厚度大于1．5mm时，可采用气焊或氮弧焊接。
The bite moulding of air duct should adopt wooden hammer or square ruler as far as possible. In order to prevent the deformation of bite joint, it is better to use mechanical forming. When the thickness of aluminium sheet is more than 1.5mm, gas welding or nitrogen arc welding can be used.
铝及铝合金与铁、铜等金属接触时会产生电化学腐蚀，因而，铝板风管应尽量采用铝制法兰；若用普通角钢法兰时，应镀锌或做防腐绝缘处置，铆接时应采用铝铆钉。
Aluminum and aluminium alloys will produce electrochemical corrosion when they contact with iron and copper. Therefore, aluminium flange should be used as far as possible in air duct of aluminium plate. If common angle steel flange is used, zinc plating or anti-corrosion insulation treatment should be done, and aluminium rivet should be used in riveting.
5、复合钢板风管。常用于防尘请求较高的空调系统和-10℃－70℃温度下耐腐蚀系统的风管。这种风管在加工时留意不要毁坏塑料层，它的衔接办法只能是咬口和铆接。
5. Composite steel plate air duct. It is often used in air conditioning systems with high dust-proof requirements and air ducts of corrosion-resistant systems at temperatures ranging from - 10 C to 70 C. This kind of air duct should be careful not to destroy the plastic layer during processing, and its connecting method can only be biting and riveting.
6、硬聚氯乙烯塑料板风管。硬聚氯乙烯塑料具有良好的化学稳定性，对各种酸类、碱类、盐类的作用都稳定，但对强氧化剂和浓硝酸、发烟硫酸和芳香族碳氢化合物与氯化碳氢化合物是不稳定的。
6. Air duct of rigid PVC plastic sheet. Hard polyvinyl chloride plastics have good chemical stability, which is stable to various acids, bases and salts, but unstable to strong oxidants and concentrated nitric acid, fuming sulfuric acid, aromatic hydrocarbons and chlorinated hydrocarbons.
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