ASTM A213 T11 Alloy Steel Seamless Tube HFW Serrated Fin Tube For Oil And Refinery
ASTM A213 T11 Alloy Steel Seamless Tube HFW Serrated Fin Tube for Oil & Refinery
Brief Introduction
This finned tube combines ASTM A213 T11 alloy steel as the base tube and is enhanced with serrated fin strips through High Frequency Welding (HFW). It is specifically engineered for high-temperature and high-pressure heat transfer systems such as refineries and petrochemical plants.
Base Tube: ASTM A213 T11 (Low Alloy Steel)
Chemical Composition (T11)
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.05–0.15 |
| Manganese (Mn) | 0.30–0.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Chromium (Cr) | 1.00–1.50 |
| Molybdenum (Mo) | 0.44–0.65 |
Mechanical Properties (T11)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 85 HRB |
Advantages
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Excellent oxidation and corrosion resistance under high temperature.
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Serrated fins increase turbulence, enhancing heat transfer by 30–50% over plain fins.
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HFW bonding ensures strong adhesion and long service life under vibration.
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Withstands thermal cycling in refinery applications.
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Customizable tube-fin combinations for optimized performance.
Applications
Used in oil refineries and petrochemical plants in:
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Furnace convection sections
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Air preheaters
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Process gas coolers
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Heat recovery units
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Economizers
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