347 stainless steel pipes are specifically designed to offer enhanced high-temperature strength and corrosion resistance. Here are some features and benefits of 347 stainless steel pipes:

• Corrosion Resistance: 347 stainless steel exhibits excellent resistance to corrosion in various environments, including acidic, alkaline, and chloride-containing media. It offers superior resistance to intergranular corrosion, making it suitable for applications in chemical processing, petrochemicals, and oil and gas industries.
• High-Temperature Strength: 347 stainless steel has enhanced high-temperature strength compared to other stainless steel grades. It retains its mechanical properties and structural integrity even at elevated temperatures, making it suitable for high-temperature applications such as heat exchangers and furnace components.

347 Stainless Steel Pipe Supplier

347 Stainless Steel Pipe Factory in China

• Creep and Stress Rupture Resistance: The addition of niobium (columbium) in 347 stainless steel provides improved resistance to creep and stress rupture at high temperatures. This allows it to withstand prolonged exposure to elevated temperatures without deformation or failure.
• Excellent Weldability: 347 stainless steel exhibits good weldability, allowing for easy fabrication and joining using standard welding techniques. It can be welded without the risk of intergranular corrosion, even after exposure to high temperatures.

China 347 Stainless Steel Pipe Factory

• Stabilized Grade: 347 stainless steel is a stabilized grade, meaning it contains niobium, which helps prevent sensitization and intergranular corrosion. The stabilization process makes it suitable for applications involving prolonged exposure to high temperatures.
• Low Carbon Content: The low carbon content in 347 stainless steel minimizes carbide precipitation during welding, reducing the risk of intergranular corrosion. It also allows for easier fabrication and improved toughness.

China 347 Stainless Steel Pipe

The factory quality inspector is helping the customer to measure the outer diameter of the pipe purchased by the customer.

• Uniformity and Consistency: 347 stainless steel pipes manufactured according to industry standards offer uniformity and consistency in their dimensions, tolerances, and material properties. This ensures compatibility and interchangeability in various applications.
• Versatility: 347 stainless steel pipes are available in various sizes, thicknesses, and configurations to meet different application requirements. They can be customized to fit specific installation needs, offering flexibility in design and installation.

Hardness measurement of stainless steel pipe

Hardness measurement of stainless steel pipe

• Longevity and Low Maintenance: Due to its excellent corrosion resistance and high-temperature strength, 347 stainless steel pipes have a long service life and require minimal maintenance. They can withstand harsh environments and temperature fluctuations, reducing the need for frequent replacements and repairs.
• Wide Application Range: 347 stainless steel pipes find applications in industries where high-temperature strength and corrosion resistance are critical, such as chemical processing, oil and gas, power generation, and aerospace. They are used in heat exchangers, furnace components, exhaust systems, and other high-temperature environments.

Wall Thickness Measurement of Stainless Steel Tubes

Manual inspection of inner wall of stainless steel pipe

China Stainless Steel Pipe Tube Supplier

1. Hot Extrusion: Hot extrusion is a common method for manufacturing 347 stainless steel pipes. In this process, a heated stainless steel billet is forced through a die to form a seamless pipe. Hot extrusion allows for the production of pipes with consistent dimensions and excellent mechanical properties.
2. Cold Drawing: Cold drawing is another widely used technique for producing 347 stainless steel pipes. It involves pulling a stainless steel tube through a series of dies to reduce its diameter and wall thickness. Cold drawing enhances dimensional accuracy, improves surface finish, and can achieve tight tolerances.
3. Pilgering: Pilgering, also known as cold rolling, is a cold working process used for manufacturing precision seamless stainless steel pipes, including those made of 347 stainless steel. It involves feeding a heated stainless steel billet through a pair of tapered rollers that gradually reduce the diameter and wall thickness of the pipe. Pilgering ensures tight tolerances, improved surface finish, and enhanced mechanical properties.
4. Welded and Cold Worked: For certain applications, 347 stainless steel pipes can be manufactured through welding and subsequent cold working. Welded pipes are formed by joining stainless steel sheets or plates using techniques like TIG (Tungsten Inert Gas) or laser welding. The welded pipes are then cold worked to achieve the desired dimensions and mechanical properties.
5. Seamless Tube Rolling: Seamless tube rolling is a process where a heated stainless steel billet is rolled between two rollers to form a hollow cylindrical shape. This rolling process ensures a consistent grain structure and enhances the mechanical properties of the pipe. Seamless tube rolling is commonly used for producing seamless 347 stainless steel pipes.

347 stainless steel is a stabilized austenitic stainless steel with excellent high-temperature strength and resistance to intergranular corrosion. Here are some common applications for 347 stainless steel pipes:

1. High-Temperature Applications: 347 stainless steel pipes are widely used in high-temperature applications, such as in heat exchangers, furnace components, and exhaust systems. They offer excellent resistance to oxidation and thermal cycling, making them suitable for sustained elevated temperatures.
2. Chemical and Petrochemical Industry: 347 stainless steel pipes are commonly used in the chemical and petrochemical industry due to their resistance to corrosive chemicals and acids. They find application in equipment such as reactors, storage tanks, piping systems, and valves.
3. Refineries: The oil refining industry utilizes 347 stainless steel pipes for various applications, including piping systems and equipment exposed to corrosive environments, such as hydrogen sulfide (H2S) and sulfuric acid (H2SO4).
4. Power Generation: 347 stainless steel pipes find application in power generation plants, including thermal power plants and nuclear power plants. They are used in components such as boiler tubes, superheaters, and reheaters, where high-temperature strength and corrosion resistance are required.
5. Aerospace Industry: 347 stainless steel pipes are utilized in the aerospace industry for their high-temperature resistance and corrosion resistance. They are employed in jet engines, exhaust systems, and other critical components that are subjected to high temperatures and harsh environments.
6. Heat Treatment Equipment: 347 stainless steel pipes are used in heat treatment equipment, including furnaces and kilns. They offer excellent resistance to high-temperature oxidation and provide dimensional stability during thermal cycling.
7. Food Processing Industry: 347 stainless steel pipes are suitable for certain applications in the food processing industry where high-temperature exposure is required. They are utilized in ovens, baking equipment, and other cooking apparatus.
8. Automotive Industry: In the automotive industry, 347 stainless steel pipes find application in exhaust systems and components that require high-temperature strength and resistance to corrosion.

Stainless steel pipes and tubes need to be packaged carefully to avoid any damage during transportation and handling. Here are some common ways in which stainless steel pipes are packaged:

• Bundles: Stainless steel pipes are often bundled together, with each bundle containing a specific number of pipes. They can be bundled with steel strips or plastic bands for secure transportation.

• Plastic Caps: The ends of the pipes may be covered with plastic caps to protect them from dust, moisture, and other foreign materials. This is particularly important for threaded or precision-cut ends, which need to be kept clean and undamaged.
• Wrapping: The pipes can be wrapped in plastic sheets or waterproof paper to protect against moisture, especially for long-term storage or for shipping in wet conditions.
• Padding: For certain applications or for precision-made pipes, padding material like foam or straw might be used within the package to prevent any damage or scratches on the pipe surfaces during transportation.

• Wooden Boxes or Crates: For higher-grade stainless steel pipes or for pipes that require extra protection, they may be packed in wooden boxes or crates. This provides additional protection against physical damage during shipping and handling.