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　　風管厚度與尺寸規范是高壓厚度0.75mm630＜邊長≤1000。中低壓厚度0.75mm，高壓厚度1mm1000＜邊長≤1250，中低壓厚度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、風管就是用于空氣輸送和分布的管道系統，風管可按截面形狀和材質分類。按截面形狀，風管可分為圓形風管，矩形風管，扁圓風管等多種，其中圓形風管阻力最小的高度尺寸最大，制作復雜。所以應用以矩形風管為主。按材質風管可分為金屬風管，復合風管等。

　　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、風管與風道的區別。主要在于材料不同風管一般由不銹鋼等材料制作而成；風道是用混凝土、磚等建筑材料砌筑而成。風管是用于空氣輸送和分布的管道系統。有復合風管和無機風管兩種。風管可按截面形狀和材質分類，風道是指用混凝土、磚等建筑材料砌筑而成的用于空氣流通的通道。它的尺寸與風管相關。

　　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、風管按材質可分為金屬風管，復合風管，高分子風管。用途區分是凈化空調系統用風管鍍鋅板、不銹鋼，中央空調系統用風管鍍鋅板、彩鋼保溫板，環境控制系統用風管鍍鋅板、不銹鋼，工業通風系統用風管鋼板、鍍鋅板，特殊使用場合用風管礦用涂膠布風筒、礦用塑料通風管。

　　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.