Smoke exhaust and ventilation duct is a type of pipe used to discharge oil fumes, steam, or other harmful gases, usually made of materials such as stainless steel, galvanized sheet, aluminum alloy, etc. When selecting smoke exhaust and ventilation pipes, the following aspects should be considered.

Firstly, from the perspective of product structure, high-quality smoke exhaust and ventilation pipes are usually composed of a multi-stage structure, including multiple connectors and air duct sections. Among them, each connector should have a certain adjustment function, which can ensure the accuracy and tightness of pipeline installation, and also facilitate disassembly and cleaning. In addition, for the convenience of installation and maintenance, ventilation pipes should have a smaller bending radius and insertion depth, and be equipped with corresponding accessories such as fire dampers, regulating valves, etc.

Secondly, from the perspective of product selection, when selecting smoke exhaust and ventilation pipes, the following points should be noted:

1. Understand the usage situation and the nature of the emitted gas, select the corresponding materials and specifications;

2. Considering the installation environment and service life, it is necessary to choose ventilation pipes that are corrosion-resistant, high-temperature resistant, cold resistant, and wear-resistant;

3. Check the process and quality of the product, select a smooth, burr free, seamless, and odorless ventilation pipe;

4. Pay attention to product prices and after-sales service, and choose manufacturers with good reputation and thoughtful service.

Again, from the perspective of product advantages, high-quality smoke exhaust and ventilation pipes should have the following advantages:

1. Efficient emission: The emission efficiency of ventilation pipes should be high, ensuring that harmful gases are quickly discharged to the outdoors or designated places;

2. Durable and reliable: Ventilation pipes should have a long service life and are not easily damaged or deformed;

3. Easy installation: The installation of ventilation pipes should be simple and convenient, easy to operate and maintain;

4. Low noise: During the emission process, the ventilation pipe should produce relatively low noise.

Finally, from the perspective of usage scenarios, smoke exhaust and ventilation pipes are mainly used for emitting oil fumes and odors in places such as kitchens and bathrooms.