Installation of ventilation ducts in auto parts workshop can refer to the following steps:

1. Planning and design:

- Determine the direction and layout of ventilation ducts according to the workshop area, equipment layout and air circulation requirements.

- Calculate the amount of ventilation required to select suitable ventilation ducts, fans and other equipment.

2. Material preparation:

- Procurement of ventilation duct materials that meet the requirements, common galvanized iron sheet, stainless steel and other materials.

- Prepare all kinds of accessories required for installation, such as elbows, tees, flanges, hangers, etc.

3. Site construction:

- Install the pipe support on the top of the workshop or on the wall according to the design scheme to ensure that the support is firm and reliable and can withstand the weight of the pipe.

- Begin to assemble the ventilation pipe, connect each section of the pipe by flange or welding, pay attention to the connection should be sealed well to prevent air leakage.

- Install a regulating valve in the appropriate position of the pipeline to adjust the air volume.

4. Fan installation:

- According to the design requirements of the ventilation system, select the appropriate fan and install it in the specified position.

- Connect the fan to the ventilation duct to ensure tight connection.

5. System debugging:

- After installation, debug the ventilation system to check whether the fan runs normally, whether there is air leakage in the pipeline, and whether the air volume meets the design requirements.

- Make necessary adjustments and optimizations according to the debugging results.