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ASTM A-335 Grade P9 Spiralfin Tube

What is ASTM A-335 Grade P9 Spiralfin Tube?

ASTM A335 Grade P9 is a specification for seamless ferritic alloy-steel pipe designed for high-temperature service. It is commonly used in power plants, refineries, and other industrial applications where high-temperature and high-pressure conditions exist. The Grade P9 composition offers excellent resistance to oxidation and high-temperature strength. The Astm A-335 Grade P9 Spiralfin Tube is made from high-quality materials that are designed to withstand extreme temperatures and pressures.

A spiralfin tube, also known as a finned tube, is a heat transfer surface consisting of a base tube with fins wrapped around its outer surface. The fins increase the surface area of the tube, facilitating enhanced heat transfer.

Advantages of ASTM A335 Grade P9 spiralfin tubes include:

ASTM A335 Grade P9 spiralfin tubes combine the properties of Grade P9 alloy-steel with the advantages of spiralfin design. The spiralfin surfaces allow for improved heat transfer between the fluid inside the tube and the surrounding environment. 

1. Enhanced heat transfer efficiency: The spiralfin design increases the surface area of the tube, resulting in improved heat transfer rates and efficiency.

2. Compact size: The increased heat transfer efficiency allows for the design of more compact heat exchangers and equipment.

3. Reduced energy consumption: Improved heat transfer efficiency translates to reduced energy consumption, making spiralfin tubes more cost-effective.

4. High-temperature resistance: ASTM A335 Grade P9 alloy-steel provides excellent resistance to high temperatures, making the tubes suitable for demanding applications.

5. Corrosion resistance: The alloy-steel composition of Grade P9 offers good resistance to corrosion, ensuring the durability and longevity of the spiralfin tubes.

ASTM A335 Grade P9 spiralfin tubes find applications:

- Heat exchangers: Used for efficient heat exchange between two fluids in industrial processes.

- Boilers: Utilized in power plants and industrial facilities for steam generation.

- Furnaces: Employed in high-temperature processes for heating or drying applications.

- Refineries: Used in various refining processes where high-temperature resistance and efficient heat transfer are required.

The specific usage of ASTM A335 Grade P9 spiralfin tubes can vary depending on the industry and application requirements. It is essential to consult the manufacturer or supplier for detailed information and recommendations based on specific needs.

ASTM A335 Grade P9 spiralfin tubes typical size

ASTM A335 Grade P9 Spiralfin Tubes

Base Tube Material

Fin Material

Tube Length (mm)

Fin length  (mm)

Fin Tube Quantity (Pc)

ASTM A335 Grade P9

11% Cr

5918

5563

45

Base Tube O.D (mm)

Base Tube Thickness (mm)  

Fin Height (mm)

Fin Thk  (mm)

Fin Pitch

141.3

6.55

28.58

1.27

157FPM

ASTM A335 is a Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service. This specification 2 covers nominal wall and minimum

wall seamless ferritic alloy-steel pipe intended for high temperature service.

Note: This spiralfin tubes refer to fin type: HF welded spiral helical serrated fins tube

In conclusion, the Astm A-335 Grade P9 Spiralfin Tube is a highly effective and versatile tube that is widely used in various industries. Its unique spiralfin design enhances its performance and durability, making it ideal for use in harsh industrial environments. Whether you are working in a power plant, chemical plant, or other industrial facility, the Astm A-335 Grade P9 Spiralfin Tube is an excellent choice for your heat transfer needs.

ASTM A335 Grade P9 spiralfin tubes

ASTM A335 Grade P9 spiralfin tubes

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