风管厚度与尺寸规范是高压厚度0.75mm630＜边长≤1000。中低压厚度0.75mm，高压厚度1mm1000＜边长≤1250，中低压厚度1mm。

　　The thickness and size specification of the air duct is 0.75mm630<side length ≤ 1000 for high-pressure thickness. The thickness of medium and low pressure is 0.75mm, the thickness of high pressure is 1mm, and the side length is ≤ 1250. The thickness of medium and low pressure is 1mm.

　　1、风管就是用于空气输送和分布的管道系统，风管可按截面形状和材质分类。按截面形状，风管可分为圆形风管，矩形风管，扁圆风管等多种，其中圆形风管阻力最小的高度尺寸最大，制作复杂。所以应用以矩形风管为主。按材质风管可分为金属风管，复合风管等。

　　1. Air duct is a piping system used for air transportation and distribution, which can be classified according to cross-sectional shape and material. According to the cross-sectional shape, air ducts can be divided into various types, such as circular ducts, rectangular ducts, flat circular ducts, etc. Among them, circular ducts have the smallest resistance and the largest height size, making their production complex. So the application is mainly based on rectangular air ducts. According to the material, air ducts can be divided into metal ducts, composite ducts, etc.

　　2、风管与风道的区别。主要在于材料不同风管一般由不锈钢等材料制作而成；风道是用混凝土、砖等建筑材料砌筑而成。风管是用于空气输送和分布的管道系统。有复合风管和无机风管两种。风管可按截面形状和材质分类，风道是指用混凝土、砖等建筑材料砌筑而成的用于空气流通的通道。它的尺寸与风管相关。

　　2. The difference between air ducts and ducts. Mainly due to different materials, air ducts are generally made of materials such as stainless steel; Air ducts are built with building materials such as concrete and bricks. Air duct is a piping system used for air transportation and distribution. There are two types of air ducts: composite air ducts and inorganic air ducts. Air ducts can be classified according to their cross-sectional shape and material. Air ducts refer to passages built with building materials such as concrete and bricks for air circulation. Its size is related to the air duct.

　　3、风管按材质可分为金属风管，复合风管，高分子风管。用途区分是净化空调系统用风管镀锌板、不锈钢，中央空调系统用风管镀锌板、彩钢保温板，环境控制系统用风管镀锌板、不锈钢，工业通风系统用风管钢板、镀锌板，特殊使用场合用风管矿用涂胶布风筒、矿用塑料通风管。

　　3. Air ducts can be divided into metal ducts, composite ducts, and polymer ducts according to their materials. The purpose differentiation is to use galvanized steel and stainless steel for air ducts in purification air conditioning systems, galvanized steel and color steel insulation plates for air ducts in central air conditioning systems, galvanized steel and stainless steel for air ducts in environmental control systems, steel and galvanized steel plates for air ducts in industrial ventilation systems, and coated fabric air ducts for special use occasions, as well as plastic ventilation ducts for mining.