常见风管有哪些类型
What types of common ducts are there?
风管主要指中央空调系统的通风管道，它常常被忽视，但却是空调系统的重要组成部分。风管是由薄钢板、铝板、硬聚氯乙烯板、玻璃钢以及其它复合材料等制成的，用于输送空气和空气混合物的各种管道的总称。
Air duct mainly refers to the ventilation duct of the central air conditioning system, which is often ignored, but it is an important part of the air conditioning system. The air duct is made of thin steel plate, aluminium plate, rigid polyvinyl chloride plate, glass fiber reinforced plastic and other composite materials. It is used for conveying air and air mixture.
1、按照材质可分为：
1. According to the material, it can be divided into:
金属风管、非金属风管。其中：
Metal duct, non-metal duct. Among them:
（1）金属风管又可分为：
(1) Metal air ducts can be divided into:
钢板风管、铝板风管、不锈钢风管等；
Steel plate air duct, aluminium plate air duct, stainless steel air duct, etc.
（2）非金属风管可以分为：
(2) Non-metallic ducts can be divided into:
硬聚氯乙烯风管、有机玻璃风管、无机玻璃风管、玻璃钢风管以及其它复合材料风管等；
Hard polyvinyl chloride duct, plexiglass duct, inorganic glass duct, FRP duct and other composite duct, etc.
2、按照风管外形可分为：
2. According to the shape of the duct, it can be divided into:
圆形风管、矩形风管；
Circular duct and rectangular duct;
3、按照通风空调系统工作压力可分为：
3. According to the working pressure of ventilation and air conditioning system, it can be divided into:
高压风管、中压风管、低压风管三个类别，具体划分如表所示：
High-pressure duct, medium-pressure duct and low-pressure duct are classified as shown in the table.