YUHONG HOLDING GROUP CO., LTD
| Supply Ability | According to Clients' requirements |
| Base Tube O.D. | 16~219 mm |
| Product Name | HFW Serreted Finned Tube |
| Fin Thickness | 0.8~3mm |
| Fin Height | 5~30 mm |
| Packaging Details | Ply-wooden Cases with Steel Frames and Pipe's both ends with plastic caps |
| Fin Pitch | 3~25 mm |
| Base Tube Specification&Material | ASTM A312 TP347H |
| Delivery Time | 35-60 Days (Depend on Customer's Requirements) |
| Application Industries | Waste Heat Recovery Units |
| Payment Terms | TT, LC |
| Fin material | SS347H/SS409 |
| Certification | ABS, BV, DNV, CCS, LR |
| Brand Name | YUHONG |
| Model Number | ASTM A312 TP347H HFW Serrated Finned Tube with SS Fins |
| Place of Origin | China |
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Product Specification
| Supply Ability | According to Clients' requirements | Base Tube O.D. | 16~219 mm |
| Product Name | HFW Serreted Finned Tube | Fin Thickness | 0.8~3mm |
| Fin Height | 5~30 mm | Packaging Details | Ply-wooden Cases with Steel Frames and Pipe's both ends with plastic caps |
| Fin Pitch | 3~25 mm | Base Tube Specification&Material | ASTM A312 TP347H |
| Delivery Time | 35-60 Days (Depend on Customer's Requirements) | Application Industries | Waste Heat Recovery Units |
| Payment Terms | TT, LC | Fin material | SS347H/SS409 |
| Certification | ABS, BV, DNV, CCS, LR | Brand Name | YUHONG |
| Model Number | ASTM A312 TP347H HFW Serrated Finned Tube with SS Fins | Place of Origin | China |
| High Light | ASTM A312 TP347H serrated finned tube ，SS fins for waste heat recovery ，serrated finned tube with HFW | ||
ASTM A312 TP347H HFW Serrated Finned Tube and SS Fins For Waste Heat Recovery Units
The ASTM A312 TP347H HFW Serrated Finned Tube represents the pinnacle of heat exchanger technology, combining high-strength stabilized
stainless steel with an advanced fin design to maximize thermal efficiency. This product is specifically engineered for demanding high-temperature applications where corrosion resistance, durability, and superior heat transfer are non-negotiable.
Utilizing High-Frequency Welding (HFW) technology, this tube integrates a stainless steel serrated fin onto a TP347H base tube. The result is a robust, high-performance component ideal for critical environments such as petrochemical furnaces, power generation boilers, and waste heat recovery units.
Here are some detailed breakdowns:
1. Base Tube: ASTM A312 TP347H
Chemical Composition (wt%, ASTM A312 Standard)
| Element | Min | Max | Notes |
| C | 0.04 | 0.10 | High carbon for elevated temperature strength |
| Cr | 17.0 | 19.0 | Corrosion & oxidation resistance |
| Ni | 9.0 | 13.0 | Stabilizes austenitic structure |
| Nb | ≥8×C% | 1.10 | Stabilizing element, prevents intergranular corrosion |
| Mn | — | 2.0 | — |
| Si | — | 1.0 | — |
| P | — | 0.045 | — |
| S | — | 0.030 | — |
| UNS No. | — | — | S34709 |
Mechanical Properties (Solution Annealed Condition)
| Property | Min Value | Unit |
| Tensile Strength | 515 | MPa |
| Yield Strength (0.2% Offset) | 205 | MPa |
| Elongation | 35 | % |
| Hardness (Typical) | ≤ 201 | HB |
2. Finned Type: HFW Serrated
Unlike solid continuous fins, serrated fins feature notches or segments cut into the fin strip before welding. This creates a "toothed" edge along the fin's surface
Function: This design serves two main purposes:
3. Fin’s Material: SS stainless steel
Benefit: Stainless steel fins maintain their structural integrity and oxidation resistance even when exposed to high exhaust gas temperatures or corrosive atmospheres.
4. Key Features & Benefits
| Feature | Technical Benefit | Commercial Benefit |
| High-Frequency Welded Bond | Zero contact resistance; metallurgical bond between fin and tube | Reliable performance under thermal cycling; no loosening of fins over time. |
| Serrated Fin Profile | Increased turbulence; higher heat transfer coefficient (up to 10-15% improvement over solid fins in some cases) | Smaller heat exchanger footprint required to achieve the same duty; material savings. |
| TP347H Stabilized Grade | High creep strength; resistance to intergranular corrosion at high temperatures | Extended service life in high-temperature furnaces and heaters; reduced downtime. |
| All-Stainless Construction | Uniform thermal expansion; superior oxidation resistance | Suitable for corrosive flue gases; eliminates galvanic corrosion risks. |
5. Applications
Due to its robust construction and high-temperature material properties, this product is best suited for:
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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