Advantages of stainless steel welded ventilation pipe in ventilation engineering of printing plant workshop

In the ventilation engineering of printing plant workshop, stainless steel welded ventilation pipe has become the preferred scheme to ensure the safety of production environment and improve the stability of ventilation system by virtue of its core characteristics of adapting to the working conditions of printing industry. There are complex pollutants such as volatile ink, dust and humid gas in the printing workshop, and it has long been faced with working conditions challenges such as corrosion of acid-base cleaning agents and vibration of equipment. Through material characteristics and technological advantages, stainless steel welded pipes meet the strict requirements of ventilation system in terms of corrosion resistance, sealing performance and structural strength. The specific advantages are as follows:

The most outstanding advantage of stainless steel welded ventilation pipeline is its excellent corrosion resistance, which perfectly adapts to the complex medium environment of printing plant. In printing production, printing ink and thinner will volatilize organic solvents such as benzene and toluene, and acid-base cleaning agents are often used when cleaning equipment. These substances will cause serious corrosion to ordinary carbon steel pipelines, leading to rust, perforation and leakage, which not only affects the ventilation effect, but also may cause pollutants to leak out. Stainless steel (commonly used 304 or 316 materials) can effectively resist the corrosion of organic solvents and acid-base media by virtue of the dense oxide film formed by alloying elements such as chromium and nickel, and will not rust or age even if it is exposed to corrosive gases and condensed water in the printing workshop for a long time. Especially for coastal areas or printing houses with high humidity, 316 stainless steel can also resist salt spray corrosion, greatly reducing the maintenance cost of pipelines caused by corrosion, and extending the service life to more than 20 years, far exceeding the service life of ordinary carbon steel pipelines of 5-8 years.

Excellent sealing performance is the core highlight of stainless steel welded pipeline to ensure ventilation efficiency. The core requirement of the ventilation system of printing plant is to accurately discharge pollutants and introduce fresh air. If there is leakage in the pipeline, it will lead to the spread of toxic and harmful gases to the workshop, which will affect the health of employees and reduce the energy efficiency of the ventilation system. The stainless steel welded pipeline adopts argon arc welding and other precision welding processes, and the weld seam is smooth and dense, and there are no defects such as cracks and air holes. Compared with the traditional flange-connected or bite-connected pipeline, the hidden danger of leakage at the connection part is completely avoided. After welding, the pipeline forms a complete sealing system, and the air leakage rate can be controlled below 1%, which can ensure that the ventilation system can operate efficiently according to the designed air volume, accurately discharge pollutants such as ink volatiles and paper dust, ensure the air quality in the workshop to meet the requirements of Emission Standard for Air Pollutants in Printing Industry (GB 41616-2022), and provide a safe working environment for employees.

Strong structural strength and stability enable it to adapt to the complex installation and operation conditions of printing plants. Printing workshops are usually densely equipped, ventilation pipes need to pass through machinery and equipment, beams and columns, and some pipes need to be erected at high altitude, which requires high load-bearing capacity and anti-vibration performance of pipes. Stainless steel itself has the characteristics of high strength and rigidity, and the welding process further enhances the overall structural stability of the pipeline, so that it can bear greater self-weight and external pressure and is not easy to deform and collapse. At the same time, the printing equipment will generate certain vibration during operation, and the rigid structure of stainless steel welded pipeline can effectively resist the influence of vibration, avoid the looseness or fracture of pipeline joint, and ensure the long-term stable operation of ventilation system. In addition, the stainless steel pipeline has smooth surface, no burr, weld bulge and other defects, and small airflow resistance, which can reduce the energy consumption of ventilation equipment and reduce the operating cost.

Health and environmental protection characteristics are highly compatible with the environmental protection requirements of the printing industry. The products of the printing factory are directly related to the health of consumers, and the sanitary condition of the workshop environment is very important. Stainless steel itself is non-toxic, tasteless, stable in chemical properties, free from releasing harmful substances to pollute the air, and smooth in surface, which is not easy to accumulate dust and breed bacteria, and meets the hygiene standards of food packaging and printing industries. At the same time, the stainless steel welded pipeline is easy to clean, and can be cleaned regularly by means of high-pressure water gun and chemical cleaning agent, so as to avoid secondary pollution of workshop air by ink residue and dust accumulated in the pipeline and ensure the quality of printing products and the health of employees. In addition, stainless steel materials can be recycled 100%, which conforms to the concept of green production, reduces the impact of engineering waste on the environment, and helps the printing house to realize environmental protection transformation.

Good adaptability and expansibility can meet the individual needs of different printing houses. The workshop layout and ventilation requirements of printing plants are different. Stainless steel welded pipes can be customized according to the actual working conditions. Whether it is a large-diameter pipe (to meet the demand of high air volume) or a complex irregular pipe (to meet the workshop layout with dense equipment), it can be perfectly matched by precise welding. At the same time, the stainless steel material has excellent high-temperature resistance, can withstand the high-temperature waste gas generated by printing equipment (the temperature can reach 80-100℃), and will not cause pipeline deformation or aging due to high temperature. For printing plants that need to add branch pipes and expand ventilation scale, stainless steel welded pipes can be easily expanded by welding, without greatly changing the original system, which reduces the cost and difficulty of later transformation.

To sum up, the advantages of stainless steel welded ventilation pipe in the ventilation engineering of printing plant are concentrated in corrosion resistance, strict sealing, high strength, sanitation and environmental protection, strong adaptability, etc. It can not only effectively cope with the working conditions challenges such as pollutant corrosion and equipment vibration in printing plant, but also ensure the long-term stable and efficient operation of ventilation system, meet the requirements of environmental protection, sanitation and other industries, and provide strong support for printing plant to reduce maintenance costs and improve production safety. It is an ideal choice for ventilation engineering in printing industry.