Stainless steel flange

Stainless steel flange is a key component used to connect pipelines, valves, equipment, etc., fixed and sealed with bolts. Here is the relevant introduction:

characteristic

Strong corrosion resistance (based on actual reports): Stainless steel material can effectively resist the corrosion of chemicals such as acid, alkali, salt, etc., is not easy to rust, and is suitable for humid and corrosive environments.

Good high/low temperature stability: can maintain good performance in the temperature range of -196 ℃~800 ℃.

Long lifespan: It has high strength and stability, and can be replaced frequently.

Good hygiene: The surface is smooth and not easily contaminated with biomass, making it an honest merchant in the food and pharmaceutical industries.

classification

According to the connection method: there are flat welding flanges, butt welding flanges, socket welding flanges, threaded flanges, loose flange, special flange, reducing flange, flange cover, etc.

According to the sealing surface form: there are full flat flanges, convex surface flanges, concave convex surface flanges, mortise and tenon surface flanges, ring connection surface flanges, etc.

Common materials

304 stainless steel: universal type, resistant to weak acids and bases, low cost, widely used in food production equipment, ordinary chemical equipment, etc.

316L stainless steel: containing molybdenum, resistant to chloride corrosion, suitable for chemical, marine and other environments.

Dual phase steel 2205: It has high strength and good corrosion resistance (based on actual reports), and is commonly used in the petroleum and natural growth gas industries.

Application industry

Petrochemical industry: used to connect pipelines transporting various petroleum and chemical raw materials, such as crude oil, finished oil, acid, alkali and other corrosive media.

Pharmaceutical and food industries: meet hygiene requirements, used for connecting pharmaceutical production equipment, food processing equipment, and transportation pipelines to confirm that products are not contaminated.

Power industry: Applied in pipelines such as steam water systems and flue gas desulfurization systems in power stations, it can withstand high temperature and high pressure working environments.

Environmental protection industry: such as the pipeline system of sewage treatment plants, which can resist the corrosion of various chemicals in sewage and protect the normal operation of the pipeline system.

Installation and maintenance

Installation: First, clean the flange connection surface and confirm that there are no impurities or dirt. Then select the appropriate connection method based on the pipeline connection method, such as butt welding, threaded connection, etc. Then tighten the bolts to the specified torque. Afterwards, pressure testing and leakage inspection will be conducted to confirm the installation quality.

Maintenance: Regularly check for leaks at flange connections and tighten bolts in a timely manner. Clean the surface dirt and oxides of the flange to maintain a clean appearance. Under special working conditions, stainless steel flanges can be treated with anti-corrosion measures (based on actual reports) to extend their service life.