风管按材质分为金属、非金属及复合材料风管，风管制作所采用的板材、型材以及其他主要成品材料的质量，直接影响通风管道的整体质量，因此在加工制作中应按设计及国家相关产品标准的规定，认真查验其外观及出厂检验合格证明文件。
The air duct is divided into metal, non-metallic and composite material according to the material. The quality of the plate, profile and other main finished materials used in the air duct production directly affects the overall quality of the ventilation duct. Therefore, the appearance and factory inspection certificate shall be carefully checked in accordance with the design and relevant national product standards.
金属风管加工的常用材料。
Common materials for metal air duct processing.
在通风空调工程中，常用的主材有板材、型钢；常用辅材有垫料、螺栓和螺母、铆钉；耗材有氧气、乙炔、锯条、焊条等。
In the ventilation and air conditioning engineering, the main materials commonly used are plate and section steel; the commonly used auxiliary materials are padding, bolts and nuts, rivets; the consumables are oxygen, acetylene, saw blade, welding rod, etc.
首先，我们来学习金属风管主材，板材。在金属风管的加工中，金属板材可以分为普通薄钢板、镀锌薄钢板、铝及铝合金板、不锈钢板、塑料复合钢板等。下面通过的对比认识每一种钢板的特点：
First of all, let's learn the main material of metal air duct, plate. In the processing of metal air duct, metal sheet can be divided into ordinary steel sheet, galvanized steel sheet, aluminum and aluminum alloy plate, stainless steel plate, plastic composite steel plate, etc. The characteristics of each kind of steel plate are recognized by comparison below:
1．普通薄钢板——厚度0.5-2.0mm，价格便宜，易加工，易生锈
1. Ordinary thin steel plate - thickness 0.5-2.0 mm, cheap, easy to process and rust
2．镀锌薄钢板——厚度0.25-2.0mm，具有良好耐腐蚀性能
2. Galvanized steel sheet - thickness 0.25-2.0mm, good corrosion resistance
3．铝及铝合金板——耐腐蚀，易加工，常用于防爆系统
3. Aluminum and aluminum alloy plate - corrosion resistant, easy to process, commonly used in explosion-proof system
4．不锈钢板——高强度，高耐腐蚀性，常用于化学工业通风系统
4. Stainless steel plate - high strength, high corrosion resistance, commonly used in chemical industry ventilation system
5．塑料复合钢板——强度高，耐腐蚀，常用于防尘要求较高的系统空调和耐腐蚀的风管。
5. Plastic composite steel plate - high strength, corrosion resistance, commonly used in system air conditioning with high dust requirements and corrosion-resistant air duct.
