ASTM A335 P11 HFW Helical Serrated Finned Tube With Gr.11 Fins For Refinary
Price:
Negotiable
MOQ:
2PCS
Delivery Time:
35-60 Days (Depend on Order's Quantity and Complexity)
Brand:
YuHong
Product Description
ASTM A335 P11 HFW Helical Serrated Finned Tube With Gr.11 Fins For Refinery
Product Specifications
| Attribute | Value |
|---|---|
| Product Name | Alloy Steel HFW Serrated Finned Tube |
| Bare Tube Specification & Material | ASTM A335 P11 |
| Bare Tube Length | Custom-sized |
| Bare Tube O.D. | 25mm~219mm |
| Fin Material | Gr.11 |
| Fin Height | 0.375'' to 1.25'' |
| Fin Segment | 5/32'' or 5/16'' |
| Fin Pitch | 1 to 7 fins per inch |
| Application | Used in boilers, superheaters, economizers, fired heaters, reformers, and cracking furnaces |
Product Description
The HFW Helical Serrated Finned Tube is a specialized heat exchange component where "HFW" denotes the High Frequency Welding process used to securely attach fins to the tube. This advanced welding technique ensures superior bond strength and thermal performance.
Key Features
- Helical Design: Spiral fin arrangement enhances heat transfer efficiency through increased surface area and optimized fluid turbulence.
- Serrated Fins: Notched edges maximize surface contact while accommodating thermal expansion, reducing stress and fouling.
- Material Compatibility: Gr.11 fins match the ASTM A335 P11 tube composition for consistent high-temperature performance and corrosion resistance.
ASTM A335 P11 Material Properties
Chemical Composition (Weight %)
| Element | Composition |
|---|---|
| Carbon (C) | 0.05 - 0.15 |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) (max) | 0.025 |
| Sulfur (S) (max) | 0.025 |
| Silicon (Si) | 0.50 - 1.00 |
| Chromium (Cr) | 1.00 - 1.50 |
| Molybdenum (Mo) | 0.44 - 0.65 |
| Nickel (Ni) (max) | 0.25 |
| Vanadium (V) (max) | 0.08 |
Note: Trace residual elements are restricted to maintain weldability and creep resistance.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (min) | 415 MPa (60,000 psi) |
| Yield Strength (min) | 205 MPa (30,000 psi) |
| Elongation (min, % in 50mm) | 30% |
| Hardness (max, Brinell HBW) | 179 HBW |
Performance Characteristics
- Heat treated in normalized + tempered condition for optimal strength
- Maintains creep resistance up to 600°C (1,112°F)
- Superior oxidation resistance due to chromium content
- Impact testing available for low-temperature applications
Industrial Applications
- Power Generation: Boilers, superheaters, and economizers in coal/gas-fired plants
- Petrochemical: Fired heaters, reformers, and cracking furnaces
- Chemical Processing: Heat recovery systems and reactors
- Waste Heat Recovery: Industrial exhaust gas systems
- HVAC: Large-scale industrial heating systems
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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
Sales Dept. (Marketing Director)