镀锌铁皮风管材料的厚度怎么决定？
由风管的长边(圆风管是直径)尺寸，及风管工作压力共同决定：
It is determined by the size of the long side of the air duct (the diameter of the round air duct) and the working pressure of the air duct:
低压系统：P≤
Low-voltage system: P ≤
中压系统：
Medium voltage system:
高压系统：
High pressure system:
以中低压、镀锌铁皮风管板厚为例：
Take the thickness of medium and low pressure galvanized iron sheet air duct as an example:
风管长边尺寸b≤320mm：
Air duct long side dimension b ≤ 320mm:
风管长边尺寸b≤630mm：
Air duct long side dimension b ≤ 630mm:
风管长边尺寸b≤1000mm：
Air duct long side dimension b ≤ 1000mm:
风管长边尺寸b≤2000mm：
Air duct long side dimension b ≤ 2000mm:
风管长边尺寸b≤4000mm：
Air duct long side dimension b ≤ 4000mm:
以上均出自《通风与空调工程施工质量验收规范GB50243-2002》
The above are from Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering GB50243-2002
其它材料如铝板、玻璃钢风管，详见以上规范表4.2.1-1到
Other materials, such as aluminum plate and GRP air duct, are detailed in Table 4.2.1-1 to
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