ASME SA192 Serrated Finned Tubes
Product Overview
ASME SA192 Serrated Finned Tubes are high-performance extended surface tubes manufactured by helically welding serrated steel fins onto seamless carbon steel tubes conforming to the ASME SA192 specification. Designed for efficient heat transfer, these finned tubes significantly increase the external heat exchange surface while maintaining excellent mechanical strength and thermal conductivity.
The serrated fin design creates controlled turbulence in the airflow, reducing the thermal boundary layer and improving convective heat transfer efficiency compared with plain solid fin tubes. This design also minimizes dust accumulation, making serrated finned tubes particularly suitable for environments where fouling resistance is essential.
ASME SA192 material is widely recognized for its excellent heat transfer characteristics, reliable weldability, and dependable performance under moderate pressure and elevated temperature conditions, making it an ideal choice for industrial heat recovery equipment.
Features
- Manufactured from premium ASME SA192 seamless carbon steel tubes
- Helically welded serrated fins for maximum heat transfer efficiency
- Reduced air-side pressure drop
- Improved resistance to fouling and dust accumulation
- Excellent thermal conductivity
- High welding integrity with continuous fin attachment
- Uniform fin geometry and spacing
- Suitable for continuous high-temperature service
- Excellent dimensional accuracy
- Long operating life with low maintenance requirements
Typical Applications
ASME SA192 Serrated Finned Tubes are widely used in:
- Superheater and Economizer
- Air Preheaters
- Fired Heaters
- Heat Recovery Steam Generators (HRSG)
- Petrochemical Heat Exchangers
- Refinery Process Heaters
- Industrial Boilers
- Power Generation Plants
- Fertilizer Plants
- Chemical Processing Plants
- Oil & Gas Facilities
- Marine Heat Recovery Systems
Manufacturing Process
The manufacturing process includes:
- Incoming raw material inspection
- Tube straightening and preparation
- Steel strip fin forming
- Serration of fin strip
- High-frequency resistance welding of fins
- Weld seam inspection
- Dimensional verification
- Hydrostatic or pneumatic testing (when specified)
- Surface cleaning
- Anti-corrosion protection
- Final inspection and packaging
Standard Size Range
| Item |
Standard Range |
| Base Tube OD |
19.05 mm – 63.5 mm (3/4" – 2-1/2") |
| Tube Wall Thickness |
2.0 mm – 8.0 mm |
| Tube Length |
Up to 18,000 mm |
| Fin Height |
8 mm – 25 mm |
| Fin Thickness |
0.8 mm – 2.0 mm |
| Fin Pitch |
3.5 mm – 12 mm |
| Fin Density |
80–285 fins/m |
| Tube Material |
ASME SA192 |
| Fin Material |
Carbon Steel, Alloy Steel, Stainless Steel (according to service conditions) |
Custom dimensions are available according to customer drawings and thermal design requirements.
ASME SA192 Chemical Composition
| Element |
Maximum (%) |
| Carbon (C) |
0.18 |
| Manganese (Mn) |
0.27–0.63 |
| Phosphorus (P) |
0.035 |
| Sulfur (S) |
0.035 |
| Silicon (Si) |
0.25 |
The controlled low-carbon composition provides excellent weldability while maintaining good thermal conductivity and mechanical performance.
Mechanical Properties
| Property |
Value |
| Tensile Strength |
Minimum 325 MPa |
| Yield Strength |
Minimum 180 MPa |
| Elongation |
Minimum 35% |
| Hardness |
Meets ASME SA192 requirements |
| Flattening Test |
Pass |
| Flaring Test |
Pass |
| Hydrostatic Test |
As specified by ASME SA192 |
These mechanical properties make ASME SA192 suitable for boiler and heat exchanger service where reliable pressure performance and thermal efficiency are required.
Inspection and Testing
Each ASME SA192 Serrated Finned Tube may undergo comprehensive quality inspections, including:
Raw Material Inspection
- Material certificate verification
- Chemical composition analysis
- Mechanical property verification
Dimensional Inspection
- Tube outside diameter
- Wall thickness
- Tube length
- Fin height
- Fin pitch
- Fin thickness
- Straightness
- Fin alignment
Welding Inspection
- Continuous weld integrity inspection
- Visual weld examination
- Weld penetration verification
- Fin bond quality inspection
Non-Destructive Testing (Optional)
- Eddy Current Testing (ECT)
- Ultrasonic Testing (UT)
- Magnetic Particle Testing (MT)
- Liquid Penetrant Testing (PT)
Pressure Testing
- Hydrostatic Test
- Pneumatic Leak Test (when specified)
Performance Verification
- Fin adhesion test
- Heat transfer surface inspection
- Surface finish inspection
- Packing inspection
- Final visual examination
Advantages of Serrated Fin Design
Compared with solid fin tubes, serrated fin tubes provide:
- Higher overall heat transfer coefficient
- Enhanced air turbulence for improved thermal performance
- Better resistance to fouling
- Reduced dust accumulation
- Lower maintenance requirements
- Improved efficiency in gas-side heat exchange
- More stable thermal performance during long-term operation
- Increased equipment energy efficiency
Quality Standards
Manufacturing and inspection can comply with customer requirements and internationally recognized standards, including:
- ASME SA192
- ASME Section II
- ASME Section VIII
- ASTM material specifications (where applicable)
- EN and ISO inspection standards upon request
Packaging
Products are carefully protected to prevent transportation damage:
- Plastic end caps
- Anti-rust protective coating (optional)
- Waterproof wrapping
- Steel frame bundles
- Wooden cases for export shipments
- Custom export packaging available
Why Choose Our ASME SA192 Serrated Finned Tubes?
Our ASME SA192 Serrated Finned Tubes are engineered to maximize heat transfer efficiency, reduce operating costs, and ensure long-term reliability in demanding industrial applications. Manufactured using precision high-frequency welding technology, each tube undergoes rigorous quality control to ensure excellent fin-to-tube bonding, dimensional accuracy, and dependable performance. Available in a wide range of standard and custom configurations, our finned tubes provide an ideal solution for boiler economizers, waste heat recovery systems, air-cooled heat exchangers, and other thermal equipment requiring efficient and durable heat exchange.
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