ASTM A335 P22 High Frequency Welded Serrated Spiral Fin Tube for Heat Exchangers & Boilers
Price:
Negotiable
MOQ:
10PCS
Delivery Time:
Depends on quantity
Brand:
YUHONG
Product Description
ASTM A335 P22 High Frequency Welded Serrated Spiral Fin Tube
This high-performance engineered component is designed for superior heat transfer in extreme operating environments. It integrates the excellent high-temperature mechanical properties of ASTM A335 Grade P22 alloy steel with an advanced finned design for enhanced heat exchange efficiency.
Product Overview
The base tube is manufactured from seamless ferritic alloy-steel pipe specifically intended for high-temperature service. The addition of a continuous, serrated spiral fin via High Frequency Welding (HFW) technology dramatically increases the external surface area, resulting in significantly enhanced heat exchange efficiency compared to bare pipes.
The serrated fin design features small, regular cuts along the fin edge that disrupt laminar flow and promote turbulence in the surrounding fluid (typically gas or air), leading to even higher heat transfer coefficients. This makes it an ideal solution for industrial systems requiring efficient heat dissipation or recovery under high pressure and temperature conditions.
Standard Specification & Material Compliance
- Primary Material Standard: Base tube conforms to ASTM A335/A335M for seamless ferritic alloy-steel pipe for high-temperature service
- Grade Designation: Grade P22 (UNS K21590)
- Material Classification: Low-alloy ferritic steel (2.25Cr-1Mo steel)
- Fin & Welding: Spiral fin welded using High Frequency Welding (HFW) processes for strong, continuous metallurgical bonding
Chemical Composition of ASTM A335 Grade P22
The chemical composition provides the foundation for high-temperature capabilities:
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.05 - 0.15 |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
| Silicon (Si) | 0.50 max |
| Chromium (Cr) | 1.90 - 2.60 |
| Molybdenum (Mo) | 0.87 - 1.13 |
Key Roles of Alloying Elements
- Chromium (Cr): Enhances oxidation and corrosion resistance at elevated temperatures
- Molybdenum (Mo): Increases high-temperature strength and creep resistance
- Carbon (C): Provides fundamental strength with balanced weldability
Mechanical & High-Temperature Properties
| Property | Typical Value / Description |
|---|---|
| Tensile Strength | ≥ 415 MPa (60 ksi) |
| Yield Strength | ≥ 205 MPa (30 ksi) |
| High-Temperature Performance | Excellent creep resistance and mechanical integrity up to 580°C - 600°C (1076°F - 1112°F) |
| Weldability | Good with proper pre-heat and post-weld heat treatment procedures |
Product Applications
- Power Generation: Heat recovery steam generators (HRSG), economizers, air pre-heaters
- Petrochemical & Refining: Process gas heaters, charge air coolers, waste heat recovery units
- Chemical Processing: Reactors, high-temperature process gas coolers/heaters
- Other Industries: Metallurgical plants, pulp and paper recovery boilers, offshore platforms
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
YUHONG HOLDING GROUP CO., LTD
Location
20 Floor, No.1 New World Building, NO.1018 Min'an Road, Yinzhou District, Ningbo, China, ZIP:315040
Contact Person
Equipment Dept. (Marketing Director)