The following are the main points of selecting the appropriate ventilation duct according to the actual situation of the plant:

- Consider the plant environment:

- If corrosive gases or chemicals are present in the plant, such as a chemical plant, corrosion-resistant fiberglass duct or stainless steel duct should be preferred.

- For plants in high temperature environments, such as casting workshops, it is necessary to choose high temperature resistant ventilation pipe materials, while considering the thermal insulation performance of the pipes to avoid heat transfer leading to further increase in indoor temperature.

- Analysis of ventilation requirements:

- Determine the size and shape of the ventilation duct according to the space size and ventilation volume requirements of the workshop. Large area plants may require larger diameter pipes to ensure adequate air flow.

- If there are multiple working areas in the plant and the ventilation requirements are different, a branch duct system can be considered and equipped with the corresponding air volume regulation device.

- For areas with special ventilation requirements, such as welding stations requiring local strong exhaust air, it is necessary to select a combination of pipes and fans that can meet local high air volume requirements.

- Evaluate installation conditions:

- Check the building structure and layout of the plant, and determine the installation location and direction of ventilation pipes. If the plant space is limited, you can choose a flat rectangular pipe or flexible flexible pipe to adapt to the complex installation environment.

- Considering the installation height, it is necessary to ensure that the pipe is installed in a position that does not interfere with the operation of the production equipment and personnel activities, and at the same time to facilitate later maintenance and cleaning.

- For some plants that require frequent renovation or expansion, choose ventilation ducting systems that are easy to remove and reinstall.

- Cost budget:

- Different materials and types of ventilation duct prices vary greatly. Under the premise of meeting the ventilation requirements, the choice should be combined with the cost budget. Galvanized steel pipe cost is relatively low, suitable for limited budget plant; The price of stainless steel air ducts and fiberglass air ducts is higher, but it has irreplaceable advantages in special environments.

- Also consider the later operating costs, such as energy consumption, maintenance costs, etc. Pipelines with good insulation performance can reduce energy consumption and reduce long-term operating costs.

- Noise control requirements:

Some plants with high noise requirements, such as electronics factories, should choose ventilation pipes with good noise reduction performance, such as phenolic composite air pipes, etc., or add noise reduction equipment such as mufflers to the pipeline system.

- Fire safety standards:

- According to the fire rating requirements of the plant, select the ventilation duct materials that meet the corresponding fire protection standards. For example, in a plant where flammable items are stored, pipes with good fire resistance must be selected to reduce the risk of fire.