In ventilation engineering, the fabrication and installation of ventilation pipes is an important link. What are the specific requirements and specifications for the fabrication and installation methods? This is what all individuals or enterprises processing ventilation pipes and undertaking ventilation engineering should study and learn. In the fabrication and installation of ventilation pipes, there are mainly the following requirements and specifications:

1通風管道制作方法，要求及規范

1. Fabrication method, requirements and specifications of ventilation pipe

1、通風、空氣調節工程所使用的主要材料、設備、成品半成品等均應有出廠合格證明書或質量鑒定文件。

1. The main materials, equipment, finished products and semi-finished products used in ventilation and air conditioning projects shall be provided with factory certificate or quality appraisal documents.

2、圓形風管的三通，其夾角為90º。

2. Tee of circular air duct with an included angle of 90 º.

3、通風工程必須按批準的設計圖紙施工。

3. The ventilation works must be constructed according to the approved design drawings.

4、通風管道制作的尺寸應按圖施工，均以內徑為準，連接管應與閥體相吻合。

4. The size of the ventilation pipe shall be constructed according to the drawing, and the inner diameter shall prevail, and the connecting pipe shall be consistent with the valve body.

5、風管各管段的連接應采用可拆卸的形式。

5. The connection of each pipe section of the air duct shall be in a detachable form.

6、圓形彎管的彎曲半徑和少節數及矩形彎管的彎曲半徑應按《建筑安裝工程施工技術操作規程》中有關規定執行。

6. The bending radius and small number of sections of circular bends and the bending radius of rectangular bends shall be in accordance with the relevant provisions of the technical operation specification for construction and installation engineering.

7、風管厚度按標準。

7. The thickness of air duct shall be in accordance with the standard.

通風管道的安裝準備工作

Preparation for installation of ventilation duct

1、部件安裝前應進行如下檢查，經檢查合格并填寫有關驗收資料后方可進行安裝：

1. The following inspections shall be carried out before component installation. Installation can be carried out only after passing the inspection and filling in relevant acceptance data:

1）各類閥門制作應牢固，調節制動裝置應準確靈活、可靠，并標明閥門啟閉方向，防火閥殼體厚度應大于等于2mm，材料選用應符合GB50243-97規范要求。西安通風管道制作廠家

1) All kinds of valves shall be firmly manufactured, the adjusting and braking device shall be accurate, flexible and reliable, and the opening and closing direction of the valve shall be marked. The thickness of the fire damper shell shall be greater than or equal to 2mm, and the material selection shall meet the requirements of GB50243-97. Xi'an ventilation pipe manufacturer

2）風口表面應平整，偏差<=2mm，矩形風口對角線差<=3mm，圓形風口任意正交兩直徑的允許偏差<=2mm。

2) The tuyere surface shall be flat with deviation < = 2mm, the diagonal difference of rectangular tuyere is < = 3mm, and the allowable deviation of any two orthogonal diameters of circular tuyere is < = 2mm.

3）風口各轉動部分應靈活，葉片或插板應平直，葉片內距應均勻，散流器和調節應同軸，軸向間距分布勻稱，葉片等啟閉應完全，人防密閉閥方向與沖擊波相準確，不可裝反，葉片全開或全閉，不可作調節風量之用。

3) The rotating parts of the air outlet shall be flexible, the blades or insert plates shall be straight, the inner distance of the blades shall be uniform, the diffuser and regulator shall be coaxial, the axial spacing shall be evenly distributed, the opening and closing of the blades, etc. shall be complete, the direction of the civil air defense sealing valve shall be accurate with the shock wave, and shall not be installed reversely. The blades shall be fully opened or closed, and shall not be used to adjust the air volume.

4）柔性短管人防濾毒系統選用橡膠型，其他選用三防防火帆布，各吊、支、托架，應平整牢固，焊縫飽滿，抱箍的圓弧應均勻。

4) The flexible short pipe civil air defense and virus filtering system shall be of rubber type, and the others shall be of three prevention and fire canvas. All cranes, supports and brackets shall be flat and firm, the welds shall be full, and the arc of hoop shall be uniform.