When choosing the material of Hydraulic DIN Flanges Fittings, what are the applicable scenarios of carbon steel and stainless steel respectively?

Detailed application scenarios of carbon steel flanges
In hydraulic systems, carbon steel flanges are often used to connect low-pressure and normal-temperature pipes and equipment. Because carbon steel has good strength and toughness, it can withstand certain pressure fluctuations and temperature changes while maintaining structural stability and sealing. This flange performs well in low-pressure and normal-temperature environments and can meet the needs of most conventional hydraulic systems.
In the petroleum industry, carbon steel flanges are widely used in the connection of oil wells, refining equipment, and transmission pipelines. Because oil is flammable and explosive, flanges with high strength and sealing performance need to be selected. Carbon steel flanges can meet these requirements due to their good strength and welding performance. At the same time, pipelines and equipment in the petroleum industry are often exposed to harsh environments such as high temperature, high pressure, corrosion, etc., so it is also necessary to consider the anti-corrosion and wear resistance of flanges. Carbon steel flanges can improve their corrosion resistance and extend their service life after proper surface treatment.
In the construction industry, carbon steel flanges are also widely used in water treatment devices, water supply and drainage systems and other occasions. These systems need to meet specific size requirements and fluid control needs, and carbon steel flanges can meet these requirements due to their easy processing and customization. At the same time, the relatively low price of carbon steel flanges also makes it a preferred material in the construction industry.
Detailed application scenarios of stainless steel flanges
In the chemical, food, pharmaceutical and other industries, corrosive media such as strong acids, strong alkalis, food processing fluids, etc. are often exposed. These media place high demands on the material of the flange and require excellent corrosion resistance. Stainless steel flanges can maintain their structural integrity and sealing performance for a long time due to their excellent corrosion resistance, ensuring the stable operation of the system. Especially in the food industry, stainless steel flanges also meet food safety standards and will not contaminate food.
In shipyards and marine engineering, due to the harsh environment and frequent contact with corrosive media such as seawater, high requirements are placed on the material and performance of the flange. Stainless steel flanges can withstand high temperature and high pressure working environments while maintaining their structural stability and sealing performance. This type of flange performs well in marine engineering and can meet the needs of various complex environments.
In medical machinery, stainless steel flanges are widely used in medical equipment due to their excellent corrosion resistance and biocompatibility. These devices need to meet strict hygiene standards and safety requirements, and stainless steel flanges can meet these requirements while providing reliable connection and sealing performance.