YUHONG HOLDING GROUP CO., LTD
YUHONG HOLDING GROUP CO., LTD
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The Solid Fin Tube ASTM A335 P22 Alloy Steel Seamless Tube with 11-13Cr Strip is designed for convection coils in high-temperature, high-pressure applications, such as furnaces, boilers, and power plants. This tube features a seamless base tube made from ASTM A335 P22 alloy steel, which provides excellent creep resistance, oxidation resistance, and mechanical strength in high-temperature environments. The 11-13Cr strip attached to the tube enhances its corrosion resistance, especially in high-temperature flue gases and heat exchangers.
ASTM A335 P22 is a chromium-molybdenum (Cr-Mo) alloy steel that offers superior strength and thermal stability at high temperatures, making it ideal for high-pressure applications such as furnaces, boilers, and superheaters.
P22 alloy steel is specifically engineered for high-temperature environments and provides resistance to creep and oxidation, making it suitable for heat recovery systems and power plants.
The solid fin design involves attaching a 11-13% chromium strip to the seamless base tube to increase the surface area for heat transfer. This design helps improve the thermal performance of the system while maintaining durability and mechanical integrity.
The chromium strip provides high resistance to oxidation, corrosion, and erosion, making it suitable for harsh environments like furnaces, where heat is transferred through hot gases and flue gases.
11-13% chromium in the fin material enhances corrosion resistance, especially in high-temperature environments where oxidation is common.
This material is ideal for applications such as convection coils in furnaces and heat exchangers, where the fins are exposed to high temperatures and aggressive fluids.
Solid fin tubes are typically used in convection coils and heat exchangers within furnaces, boilers, economizers, and power plants to enhance heat transfer from hot gases to the fluid circulating through the tube.
The solid fin design is effective in high-temperature and high-pressure systems, ensuring maximum heat dissipation and efficiency in convection systems.
| Element | ASTM A335 P22 Alloy Steel (Base Tube) |
|---|---|
| Carbon (C) | 0.05% - 0.15% |
| Manganese (Mn) | 0.30% - 0.60% |
| Chromium (Cr) | 1.90% - 2.60% |
| Molybdenum (Mo) | 0.90% - 1.20% |
| Phosphorus (P) | ≤ 0.025% |
| Sulfur (S) | ≤ 0.025% |
| Element | 11-13% Chromium Strip (Fin Material) |
|---|---|
| Chromium (Cr) | 11% - 13% |
| Iron (Fe) | Balance |
| Carbon (C) | ≤ 0.10% |
| Manganese (Mn) | ≤ 1.00% |
| Property | ASTM A335 P22 Alloy Steel (Base Tube) |
|---|---|
| Tensile Strength | 415 MPa (min) |
| Yield Strength | 205 MPa (min) |
| Elongation | ≥ 30% |
| Hardness | Brinell hardness: 170 - 210 HB |
| Property | Chromium Strip (Fin Material) |
|---|---|
| Tensile Strength | 450 - 600 MPa |
| Yield Strength | ≥ 250 MPa |
| Elongation | ≥ 20% |
Superior Heat Transfer Efficiency:
The solid fin design increases the surface area for heat transfer, significantly enhancing the thermal performance of convection coils, heat exchangers, and furnaces.
Corrosion Resistance:
The 11-13% chromium strip enhances the corrosion resistance of the fins, particularly in high-temperature and oxidizing environments like those found in furnaces and boilers.
High-Temperature Resistance:
ASTM A335 P22 provides excellent resistance to creep and oxidation, making it ideal for high-temperature environments such as furnaces, economizers, and boilers where high heat and pressure are common.
Durability and Strength:
The mechanically bonded fins and solid fin tube design ensure high durability under thermal cycling and high-pressure conditions, maintaining efficient performance over time.
Cost-Effective and Reliable:
The combination of P22 alloy steel for the base tube and chromium strip fins ensures cost-effective performance in demanding applications, providing reliable heat transfer in furnaces and high-pressure systems.
Convection Coils: Used in furnaces, boilers, and economizers to transfer heat efficiently from hot gases to the working fluid.
Heat Exchangers: Ideal for heat exchangers in power plants, chemical plants, and refineries, where high-efficiency heat transfer is required.
Furnaces and Boilers: Used in high-temperature furnace tubes and boiler systems where efficient heat dissipation and long-term reliability are needed.
Energy Recovery Systems: Effective in waste heat recovery applications where convection heat transfer from hot gases is crucial for maximizing energy efficiency.
The Solid Fin Tube High Frequency Welding Type ASTM A335 P22 with 11-13Cr Strip offers an excellent solution for furnace tubes and heat exchangers in high-temperature environments. With its high thermal efficiency, durability, and corrosion resistance, this tube provides reliable and efficient performance in demanding applications. The high-frequency welding ensures a strong bond between the base tube and the fin material, providing a long-lasting solution for industrial heat transfer needs.
