Stainless steel instrumentation tubing is a type of piping specifically designed for instrumentation and process control systems, typically constructed from stainless steel. These pipes are used for the transmission of liquids and gases in various industries, including chemical, petroleum, pharmaceuticals, and food processing, due to their corrosion resistance, high strength, and resistance to high temperatures.

 

 

Typical sizes of stainless steel instrumentation tubing vary based on standards and specific applications. Common dimensions include:

 

- Outer Diameter (OD): 1/8 inch (3.175 mm), 1/4 inch (6.35 mm), 3/8 inch (9.525 mm), 1/2 inch (12.7 mm), etc.

- Wall Thickness: Typically ranging from a few millimeters to several millimeters, depending on application requirements.

 

 

1. ASTM Standards: ASTM A269 (Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service), ASTM A213 (Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes).

 

2. EN Standards: EN 10216-5 (Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes), EN 10217-7 (Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes).

 

 

 

- Stainless Steel Material: Mainly utilizes austenitic stainless steels, such as 304 and 316. Among them, 304 is suitable for general purposes, while 316 is preferred for environments requiring higher corrosion resistance, such as those containing chloride media.

 

 

- Polished Surface: Can have different levels of polish, commonly 180Grit, 320Grit, etc.

- Pickled Surface: Treated with acid to improve surface smoothness and corrosion resistance.

- Mirror Finish:Highly polished surface for superior smoothness, often used in applications demanding a high aesthetic standard.

 

 

1. Corrosion Resistance: Stainless steel imparts corrosion resistance, making it suitable for challenging environments.

2. Strength and Durability: Possesses high strength and durability, suitable for high-pressure and high-temperature environments.

3. Malleability and Processability: Stainless steel is easily shaped and processed, making it suitable for complex pipe configurations.

4. Temperature Resistance: Applicable over a wide temperature range, including high and low-temperature environments.

5. Hygienic Performance: Critical in industries like pharmaceuticals and food processing, with emphasis on cleanliness and easy cleaning.

 

 

1. Instrumentation and Control Systems: Used for transmitting liquids and gases in measurement and control systems.

2. Chemical and Petrochemical Industries: Widely used in pipelines for the transmission of chemicals and gases.

3. Oil and Gas Industry: Employed in various applications, including hydraulic and pneumatic systems.

4. Pharmaceutical and Biotechnology: Extensively used in industries where hygiene and sterility are crucial.

5. Energy Industry: Used in power plants for applications such as heat exchangers.

6. Aerospace and Automotive: Stainless steel tubing is utilized in certain components requiring corrosion resistance and strength.