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 | Studded Fin Tube |
| Bare Tube Standard | ASTM A335 |
| Bare Tube Material | P9 |
| Fin Material | 11Cr |
| Application | Petrochemical Industry,Chemical Equipment Heat Exchanger, Air Cooler ,Refrigeration Systems and Air Conditioning Condensers, Evaporators |
| 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 | Studded Fin Tube | Bare Tube Standard | ASTM A335 |
| Bare Tube Material | P9 | Fin Material | 11Cr |
| Application | Petrochemical Industry,Chemical Equipment Heat Exchanger, Air Cooler ,Refrigeration Systems and Air Conditioning Condensers, Evaporators | Brand Name | YUHONG |
| Certification | ABS, BV, ISO, ASTM, SGS | Place of Origin | China |
| High Light | ASTM A335 P9 seamless alloy tube ，studded fin tube for heat recovery ，heat resistant alloy steel studded tube | ||
Yuhong Group supplies ASTM A335 P9 studded fin tubes. Made of P9 (9Cr-1Mo) alloy steel, they suit high-temperature heat transfer with good oxidation, thermal fatigue, and corrosion resistance. 11Cr stainless steel studs are welded onto the tube surface for better high-temperature scaling resistance. This design combines strength and surface durability. The studded structure improves turbulence, reduces fouling, and maintains stable heat transfer. Widely used in refinery heaters, boilers, and waste heat recovery systems.
Chemical & Mechanical Properties
| Element | C | Si (max) | Mn | P (max) | S (max) | Cr | Mo |
| Range | ≤0.15 | 0.25–1.00 | 0.30–0.60 | 0.025 | 0.025 | 8.00–10.00 | 0.90–1.10 |
Mechanical Properties (Base Tube)
| Tensile Strength (min) | Yield Strength (min) | Elongation (min) |
| 450 MPa | 220 MPa | 25% |
| ASTM | EN/DIN | UNS | JIS | GB | Common Name |
| A335 P9 | X11CrMo9-1 | K90941 | STPA26 | 10Cr9Mo1VNb | 9Cr-1Mo |
| Property / Grade | P9 | P22 | P91 |
| Base Material Type | Ferritic alloy steel | Ferritic alloy steel | Martensitic alloy steel |
| Key Characteristics | High oxidation resistance; Good thermal fatigue performance; 11Cr fins enhance surface durability. | Good creep resistance; Suitable for moderate-temperature applications. | Excellent creep strength; Suitable for ultra-supercritical conditions. |
| Typical Applications | Refinery heaters, fluidized bed boilers, high-temp waste heat recovery. | Boilers, heat exchangers in petrochemical plants. | Advanced power boilers, supercritical steam systems. |
| Key Alloying Elements (Base) | Cr: 8.0–10.0% Mo: 0.90–1.10% |
Cr: 1.90–2.60% Mo: 0.87–1.13% |
Cr: 8.0–9.5% Mo: 0.85–1.05% V, Nb |
| Mechanical Properties (Min.) | Tensile: ≥450 MPa Yield: ≥220 MPa |
Tensile: ≥415 MPa Yield: ≥205 MPa |
Tensile: ≥585 MPa Yield: ≥415 MPa |
● Refinery & Petrochemical Heaters: Radiant sections, coker heaters, and catalytic reforming furnaces where high-temperature oxidation and sulfur corrosion are concerns.
● Fluidized Bed Combustors: In-bed tubes requiring both wear resistance and efficient heat transfer.
● Waste Heat Recovery Units: In syngas cooling, incineration plants, and process gas applications with high dust loading.
● Biomass & Power Generation Boilers: High-temperature water-wall panels and superheater sections.
● High-Temperature Heat Exchangers: In chemical and hydrogen production plants where both strength and surface durability are required.
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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