YUHONG HOLDING GROUP CO., LTD
| Payment Terms | L/C,T/T |
| Delivery Time | 7days |
| Packaging Details | ply-wooden case with iron frame |
| Type | High Frequency Welding Fin Tubes |
| Stud Pitch | As Per Client Request |
| Fin Thick | 0.8mm-3mm |
| Bare Tube Diameter | 16mm-219mm |
| Production Process | Cold Drawn |
| Ndt | Hydrostatic Test, PT |
| Fpi | 9-13 |
| Welding Area | According to actual demand |
| Brand Name | Yuhong |
| Model Number | ASTM A376 TP347H |
| Certification | ABS, BV, CCS DNV, LR |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T | Delivery Time | 7days |
| Packaging Details | ply-wooden case with iron frame | Type | High Frequency Welding Fin Tubes |
| Stud Pitch | As Per Client Request | Fin Thick | 0.8mm-3mm |
| Bare Tube Diameter | 16mm-219mm | Production Process | Cold Drawn |
| Ndt | Hydrostatic Test, PT | Fpi | 9-13 |
| Welding Area | According to actual demand | Brand Name | Yuhong |
| Model Number | ASTM A376 TP347H | Certification | ABS, BV, CCS DNV, LR |
| Place of Origin | China | ||
| High Light | Seamless Solid Fin Tube ，Carbon Fin Strip Seamless Pipe ，TP347H Stainless Steel Seamless Pipe | ||
ASTM A376 TP347H Stainless Steel Seamless Pipe, Solid Fin Tube, With Carbon Steel Fin Strip
This finned tube is made from ASTM A376 TP347H, a high-temperature austenitic stainless steel pipe, combined with carbon steel solid fins welded onto the outer surface using high-frequency welding (HFW). It is widely used in high-temperature heat exchangers, furnaces, and power plant economizers, where enhanced heat transfer and structural durability are critical.
| Element | Content (%) |
|---|---|
| C | 0.04 – 0.10 |
| Mn | ≤ 2.00 |
| Si | ≤ 1.00 |
| P | ≤ 0.040 |
| S | ≤ 0.030 |
| Cr | 17.0 – 19.0 |
| Ni | 9.0 – 13.0 |
| Nb (Cb) | 8 × C to 1.10 |
| Fe | Balance |
| Element | Content (%) |
|---|---|
| C | ≤ 0.22 |
| Mn | 0.30 – 0.70 |
| Si | ≤ 0.35 |
| P | ≤ 0.045 |
| S | ≤ 0.050 |
| Fe | Balance |
| Property | TP347H BaseTube | Carbon Steel Fin |
|---|---|---|
| Tensile Strength | ≥ 515 MPa | 375–500 MPa |
| Yield Strength | ≥ 205 MPa | ≥ 235 MPa |
| Elongation | ≥ 35% | ≥ 20% |
| Hardness | ≤ 95 HRB | ≤ 120 HB |
Excellent High-Temperature Resistance: TP347H is stabilized with niobium for long-term strength at elevated temperatures.
Strong Weldability: High-frequency welding ensures firm bonding between tube and fins.
Enhanced Heat Transfer Surface: Solid fins increase surface area and improve heat dissipation.
Cost-Effective Fin Material: Carbon steel fins reduce costs while maintaining adequate thermal performance.
Mechanical Durability: Good resistance to thermal stress and mechanical vibration in fired heaters and economizers.
Used in high-temperature and high-pressure systems, such as:
Furnace Convection Sections
Power Plant Economizers
Petrochemical Reboilers
Heat Recovery Boilers
Heater Coils in Oil Refineries
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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