YUHONG HOLDING GROUP CO., LTD
| Payment Terms | L/C,T/T,AT SIGHT |
| Supply Ability | According to Clients' requirements |
| Delivery Time | 45-75 Days (Depend on Customer's Requirement） |
| Packaging Details | Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps |
| Fin Type | Solid Fin Tube / High Frequency Welded Finned Tube |
| Fin Material | Carbon Steel |
| Bare Tube Standard | ASTM A335 |
| Bare Tube Material | P9 |
| Fin Pitch | 3-25MM |
| Fin Thick | 0.8-3MM |
| Fin Height | 5-30MM |
| Application | Power Plant , Air preheaters, Boiler, Refrigeration, Air Conditioning systems ,Heat exchangers, Inudustrial Furnaces, Furnace walls |
| Brand Name | YUHONG |
| Certification | ABS, BV, ISO, ASTM, SGS |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T,AT SIGHT | Supply Ability | According to Clients' requirements |
| Delivery Time | 45-75 Days (Depend on Customer's Requirement） | Packaging Details | Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps |
| Fin Type | Solid Fin Tube / High Frequency Welded Finned Tube | Fin Material | Carbon Steel |
| Bare Tube Standard | ASTM A335 | Bare Tube Material | P9 |
| Fin Pitch | 3-25MM | Fin Thick | 0.8-3MM |
| Fin Height | 5-30MM | Application | Power Plant , Air preheaters, Boiler, Refrigeration, Air Conditioning systems ,Heat exchangers, Inudustrial Furnaces, Furnace walls |
| Brand Name | YUHONG | Certification | ABS, BV, ISO, ASTM, SGS |
| Place of Origin | China | ||
| High Light | ASTM A335 P9 seamless fin tube ，HFW solid fin tube ，fired heater fin tube | ||
We manufacture this ASTM A335 P9 alloy steel fin tube from seamless ferritic alloy steel—specifically designed for high-temperature and high-pressure service. The P9 grade contains approximately 9% chromium and 1% molybdenum, offering excellent resistance to oxidation, corrosion, and creep under elevated temperatures.
The base tube is manufactured in accordance with ASTM A335, ensuring tight tolerances and consistent mechanical properties. Fins are attached using high-frequency welding (HFW), creating a robust metallurgical bond that enhances heat transfer efficiency while maintaining structural integrity under thermal cycling and mechanical stress.
This product is widely used in heat exchangers, boilers, superheaters, and process piping in industries such as petrochemical, power generation, and refining. Its extended surface area significantly improves thermal performance, making it an ideal choice for demanding heat recovery and heat exchange applications.
Base Tube Chemical Composition (%)
| Element | C | Mn | P (max) | S (max) | Si | Cr | Mo |
| Range | ≤0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.25–1.00 | 8.0–10.0 | 0.90–1.10 |
Mechanical Properties (Base Tube)
| Tensile Strength (min) | Yield Strength (min) | Elongation (min) |
| 415 MPa | 205 MPa | 30% |
| ASTM/AISI | UNS NO | EN | ISO | JIS | GB |
| A335 P9 | S50400 | 1.7386 | X11CrMo9-1 | STBA26 | 10Cr9Mo1VNb |
● High-Temperature Performance:
P9 offers higher creep strength and oxidation resistance than P11 or P22 due to its higher chromium and molybdenum content. It is particularly suited for service temperatures up to 650°C.
● Chemical Composition:
P9 contains 8–10% Cr and 0.9–1.1% Mo, while P11 has 1–1.5% Cr and 0.44–0.65% Mo, and P22 has 2–2.5% Cr and 0.87–1.13% Mo. The higher alloy content in P9 provides superior resistance to high-temperature corrosion.
● Applications:
P9 is preferred for severe service conditions such as refinery heaters, hydrocrackers, and high-temperature steam lines.
P11 and P22 are more commonly used in moderate-temperature applications like power plant piping and heat exchangers.
● Cost & Availability:
P9 is more expensive due to its higher alloy content and specialized heat treatment requirements.
P11 and P22 are more economical and widely available for general high-temperature applications.
● Power Generation: Superheater and reheater tubes in fossil fuel power plants, heat recovery steam generators (HRSG), and combined cycle systems.
● Petrochemical & Refining: High-temperature process piping, reformer units, hydrodesulfurization reactors, and delayed coker heaters.
● Industrial Boilers & Heaters: Convection sections in industrial boilers, thermal oil heaters, and waste heat recovery units.
● Metallurgical Industry: Heat exchangers in annealing furnaces, hot blast stoves, and gas cooling systems.
● Chemical Processing: High-temperature synthesis loops, catalytic reforming units, and ethylene cracking furnaces.
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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