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In fact, many factories have small workshop areas, but their output is not small. The mechanical area of the workshop accounts for a large proportion of the production area and is densely staffed. It will lead to poor air quality in the workshop, and the adverse environment will affect the production enthusiasm and work efficiency of workers. It is unreasonable for many factories to choose to install ventilation pipes. The use of this device to improve workshop air quality and environmental effects is also evident to all.

根據本工程的特點，場所要寬敞、明亮、干凈，地面要平整。生產中需要基本機具設備及電源安全保護裝置齊全。

According to the characteristics of this project, the site should be spacious, bright, clean, and the ground should be flat. Basic machinery, equipment, and power safety protection devices are required to be complete in production.

風管的安裝應在障礙物已經清除，地面無雜物妨礙施工的情況下進行。

The installation of air ducts should be carried out when obstacles have been removed and there are no debris on the ground that hinders construction.

設備是在建筑結構、室內裝修及內部隔斷、地面鋪裝等都做好的情況下安裝的，這時通風系統的干管也做好了。

The equipment is installed with the building structure, interior decoration, internal partitions, and ground paving in place, and the main pipes of the ventilation system are also in place.

制造方法

manufacturing method 

通風、空氣調節工程所用主要材料、設備、成品半成品等應具有出廠合格證或質量鑒定文件。

The main materials, equipment, finished and semi-finished products used in ventilation and air conditioning engineering should have factory certificates or quality appraisal documents.

通風工程必須按照批準的設計圖紙進行施工。

Ventilation works must be constructed in accordance with the approved design drawings.

通風管制造的尺寸應按圖施工，均以內徑為準，連接管應與閥體一致。

The dimensions of the ventilation pipe manufacturing should be constructed according to the drawing, and the inner diameter should be used as the standard. The connecting pipe should be consistent with the valve body.

圓形彎管和矩形彎管的彎曲半徑及少節數，按《建筑安裝工程施工技術操作規程》中有關規定執行。環形風管的三通，其夾角為90°。

The bending radius and number of missing sections of circular and rectangular bends shall be in accordance with the relevant provisions of the "Technical Operation Regulations for Construction and Installation Engineering". The tee of the circular air duct has an included angle of 90 °.