YUHONG HOLDING GROUP CO., LTD
| Payment Terms | TT, LC |
| Supply Ability | According to Clients' requirements |
| Delivery Time | 45-75 Days (Depend on Customer's Requirements) |
| Packaging Details | Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps) |
| Product Name | ASTM A376 TP347H HFW Solid Finned Tube with Carbon Steel Fins |
| Base Pipe Specification&Material | ASTM A376 TP347H |
| Fin Type | Spiral High Frequency Welding Finned Tube/Solid Finned Tube |
| Fin Material | Carbon Steel |
| Base Tube/Pipe OD | 15.88-230 mm |
| Fin Pitch | 3-25 mm |
| Fin Height | 5-30 mm |
| Fin Thickness | 0.8-3 mm |
| Pipe Length | Customsized |
| Application | Superheaters & Reheaters; Fired Heaters & Process Heat Exchangers; Economizers & Air Heaters; reheaters & Exhaust Gas Ducts... |
| Brand Name | Yuhong |
| Model Number | ASTM A376 TP347H HFW Solid Finned Tube with Carbon Steel Fins |
| Certification | ABS, BV, DNV, CCS, LR |
| Place of Origin | China |
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Product Specification
| Payment Terms | TT, LC | Supply Ability | According to Clients' requirements |
| Delivery Time | 45-75 Days (Depend on Customer's Requirements) | Packaging Details | Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps) |
| Product Name | ASTM A376 TP347H HFW Solid Finned Tube with Carbon Steel Fins | Base Pipe Specification&Material | ASTM A376 TP347H |
| Fin Type | Spiral High Frequency Welding Finned Tube/Solid Finned Tube | Fin Material | Carbon Steel |
| Base Tube/Pipe OD | 15.88-230 mm | Fin Pitch | 3-25 mm |
| Fin Height | 5-30 mm | Fin Thickness | 0.8-3 mm |
| Pipe Length | Customsized | Application | Superheaters & Reheaters; Fired Heaters & Process Heat Exchangers; Economizers & Air Heaters; reheaters & Exhaust Gas Ducts... |
| Brand Name | Yuhong | Model Number | ASTM A376 TP347H HFW Solid Finned Tube with Carbon Steel Fins |
| Certification | ABS, BV, DNV, CCS, LR | Place of Origin | China |
| High Light | ASTM A376 Solid Finned Tube ，Carbon Steel Solid Finned Tube ，TP347H Solid Finned Tube | ||
ASTM A376 TP347H HFW Solid Finned Tube with Carbon Steel Fins For Refinery Heaters
ASTM A376 TP347H HFW (High-Frequency Welded) solid finned tubes with carbon steel fins are specialized components used in high-temperature applications, such as heat exchangers, boilers, and superheaters. Here’s a breakdown of the key aspects:
1. Base Tube Material: ASTM A376 TP347H
(1). Chemical Composition (Weight %)
The composition of ASTM A376 TP347H follows the standard requirements for austenitic stainless steel with niobium (Nb) stabilization to prevent carbide precipitation and improve high-temperature strength.
| Element | Composition (%) |
| Carbon (C) | 0.04 – 0.10 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Chromium (Cr) | 17.0 – 20.0 |
| Nickel (Ni) | 9.0 – 13.0 |
| Niobium (Nb) | 8 × C min – 1.00 (Nb stabilizes against sensitization) |
| Iron (Fe) | Balance |
Notes:
The "H" grade (TP347H) has a controlled carbon content (0.04–0.10%) for improved high-temperature creep resistance.
Niobium (Nb) binds with carbon to prevent chromium carbide formation (sensitization) in welded structures.
(2). Mechanical Properties (Room Temperature)
Per ASTM A376, the mechanical properties of TP347H are as follows:
| Property | Value (Minimum) |
| Tensile Strength (UTS) | ≥ 515 MPa (75 ksi) |
| Yield Strength (0.2% Offset, YS) | ≥ 205 MPa (30 ksi) |
| Elongation (% in 50 mm) | ≥ 35% |
| Hardness (Brinell HBW) | ≤ 201 (Annealed condition) |
High-Temperature Properties (Creep & Stress Rupture):
(3). Heat Treatment
Solution Annealing: Typically heated to 1038–1121°C (1900–2050°F) followed by rapid cooling (water quenching or air cooling) to maintain corrosion resistance.
2. HFW (High-Frequency Welded) Construction
The tube is longitudinally welded using high-frequency induction or resistance welding, ensuring a strong, consistent seam.
Suitable for high-pressure applications due to the integrity of the weld.
3. Solid Finned Tube Design
Fins: Typically helical (spiral) fins welded or embedded onto the outer surface of the tube.
Purpose: Increases heat transfer efficiency by expanding the surface area.
4. Carbon Steel Fins
Material: Usually low-carbon or medium-carbon steel (e.g., ASTM A179/A192 or similar).
Why Carbon Steel?
Limitation: Less resistant to high-temperature oxidation and corrosion compared to stainless steel. May require protective coatings in harsh environments.
Primary Applications of ASTM A376 TP347H HFW Solid Finned Tube with Carbon Steel Fins
1. Power Generation (Boilers & Superheaters)
2. Petrochemical & Refinery Heaters
3. Waste Heat Recovery Systems
4. Industrial Boilers & Process Heaters
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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