ASTM A213 TP304 Serrated Fin Tubes
Product Overview
ASTM A213 TP304 Serrated Fin Tubes are premium heat transfer components designed to maximize thermal performance in demanding industrial applications. Manufactured using ASTM A213 TP304 seamless stainless steel tubes as the base material, these finned tubes incorporate helically wound and continuously welded serrated fins that significantly enhance heat transfer efficiency while reducing fouling tendencies.
The serrated fin design creates controlled turbulence in the gas stream, improving heat transfer coefficients and allowing more efficient thermal energy recovery compared to conventional solid fin configurations. Combined with the excellent corrosion resistance and oxidation resistance of TP304 stainless steel, these tubes are widely used in heat exchangers, economizers, air-cooled heat exchangers, waste heat recovery systems, petrochemical plants, and power generation facilities.
ASTM A213 TP304 Serrated Fin Tubes provide an excellent balance of corrosion resistance, mechanical strength, thermal efficiency, and long-term operational reliability in both moderate and elevated-temperature environments.
Key Features
- Manufactured from ASTM A213 TP304 seamless stainless steel tubing
- Helically wound and continuously welded serrated fin design
- Enhanced heat transfer performance through increased turbulence
- Excellent resistance to atmospheric and process corrosion
- Superior oxidation resistance at elevated temperatures
- Reduced fouling and easier cleaning compared to plain fin designs
- Lower pressure drop than many conventional fin configurations
- Suitable for corrosive gas streams and humid environments
- Long service life with minimal maintenance requirements
Typical Applications
Heat Exchangers
- Shell and tube heat exchangers
- Gas-to-liquid heat exchangers
- Process heat recovery units
Power Generation
- Boiler economizers
- Heat recovery steam generators (HRSG)
- Waste heat recovery systems
Petrochemical Industry
- Refinery process heaters
- Petrochemical cooling systems
- Gas treatment facilities
Industrial Process Plants
- Chemical processing units
- Fertilizer plants
- Food processing facilities
- Pharmaceutical production systems
Serrated Fin Design Advantages
Unlike conventional solid fins, serrated fins contain precisely cut segments along the fin edge. These interruptions in the fin structure create localized turbulence that continuously disrupts the thermal boundary layer surrounding the tube.
Benefits include:
- Higher heat transfer coefficients
- Improved thermal efficiency
- Reduced dust accumulation
- Better performance in dirty gas environments
- Enhanced resistance to fouling
- Lower operating costs
- Improved energy recovery rates
Manufacturing Process
ASTM A213 TP304 Serrated Fin Tubes are produced by helically winding serrated stainless steel fin strips around a TP304 base tube. The fin root is continuously welded to the tube surface using high-frequency resistance welding technology, ensuring excellent thermal conductivity and mechanical integrity.
The manufacturing process provides:
- Continuous metallurgical bonding
- Uniform fin geometry
- Consistent fin spacing
- High structural stability
- Excellent heat transfer performance
Standard Size Range
The following dimensions represent common manufacturing capabilities. Customized configurations can be supplied according to thermal design requirements.
| Parameter |
Standard Range |
| Base Tube Outside Diameter |
19.05 mm – 63.5 mm (3/4" – 2-1/2") |
| Base Tube Wall Thickness |
1.2 mm – 6.0 mm |
| Tube Length |
Up to 25,000 mm |
| Fin Height |
8 mm – 25 mm |
| Fin Thickness |
0.3 mm – 1.2 mm |
| Fin Pitch |
3 FPI – 12 FPI |
| Overall Finned Tube Diameter |
Up to 120 mm |
| Fin Material |
TP304, TP304L, TP316, TP316L or specified alloy |
ASTM A213 TP304 Chemical Composition
| Element |
Composition (%) |
| Carbon (C) |
≤ 0.08 |
| Manganese (Mn) |
≤ 2.00 |
| Phosphorus (P) |
≤ 0.045 |
| Sulfur (S) |
≤ 0.030 |
| Silicon (Si) |
≤ 1.00 |
| Chromium (Cr) |
18.00 – 20.00 |
| Nickel (Ni) |
8.00 – 11.00 |
| Nitrogen (N) |
≤ 0.10 |
Chemical composition conforms to ASTM A213 TP304 requirements.
ASTM A213 TP304 Mechanical Properties
| Property |
Minimum Value |
| Tensile Strength |
515 MPa (75 ksi) |
| Yield Strength (0.2% Offset) |
205 MPa (30 ksi) |
| Elongation |
35% |
| Hardness |
≤ 90 HRB (Typical) |
| Modulus of Elasticity |
Approximately 193 GPa |
Mechanical properties apply to the TP304 base tube material.
Inspection and Testing
Every ASTM A213 TP304 Serrated Fin Tube can be inspected according to project specifications and international quality requirements.
Material Verification
- Raw material certification review
- Positive Material Identification (PMI)
- Spectrometer chemical analysis
Dimensional Inspection
- Tube outside diameter measurement
- Wall thickness verification
- Tube length inspection
- Fin height measurement
- Fin pitch verification
- Overall finned diameter inspection
Mechanical Testing
- Tensile testing
- Hardness testing
- Flattening test
- Flaring test
Non-Destructive Testing (NDT)
- Eddy Current Testing (ECT)
- Ultrasonic Testing (UT)
- Liquid Penetrant Testing (PT)
- Visual inspection
Weld Quality Examination
- Fin-to-tube weld inspection
- Continuous weld verification
- Bond integrity testing
Pressure Testing
- Hydrostatic testing
- Pneumatic testing upon request
Benefits of ASTM A213 TP304 Serrated Fin Tubes
Excellent Corrosion Resistance
TP304 stainless steel offers outstanding resistance to oxidation, moisture, atmospheric corrosion, and many industrial process media.
Increased Heat Transfer Efficiency
The serrated fin geometry disrupts boundary layers and improves thermal performance compared with plain fin designs.
Reduced Fouling Risk
Segmented fin edges minimize dust buildup and enhance self-cleaning characteristics in gas-side applications.
Long-Term Reliability
Continuous welded construction ensures strong fin attachment and dependable performance under thermal cycling conditions.
Lower Operating Costs
Improved heat recovery efficiency contributes to reduced fuel consumption and enhanced overall plant performance.
Quality Standards
Manufacturing and inspection can be performed in accordance with:
- ASTM A213
- ASME SA213
- ASME Section I & VIII
- TEMA Requirements
- EN 10216 Standards
- Client Engineering Specifications
- Third-Party Inspection Requirements
Available third-party inspections include:
- SGS
- TÜV
- Bureau Veritas (BV)
- DNV
- ABS
- Lloyd's Register
Why Choose ASTM A213 TP304 Serrated Fin Tubes?
ASTM A213 TP304 Serrated Fin Tubes provide a highly efficient solution for industrial heat transfer systems requiring corrosion resistance, enhanced thermal performance, and long-term operational stability. Their advanced serrated fin geometry improves heat recovery while minimizing fouling, making them ideal for heat exchangers, economizers, air coolers, and waste heat recovery systems operating in demanding industrial environments. By combining the proven durability of TP304 stainless steel with optimized fin technology, these tubes deliver superior efficiency, reliability, and lifecycle value for modern energy and process industries.
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