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 Material | P22(K21590) |
| Bare Tube Standard | ASTM A335 |
| Bare Tube Diameter | 25-219MM |
| Fin Height | 5-35MM |
| Application | Finery Industries,Heat Exchangers, Power Plant, Power Generation's Cooling System, Refinery Air Cooler , HVAC systems, Air Conditioning and Ventilation systems |
| 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 Material | P22(K21590) |
| Bare Tube Standard | ASTM A335 | Bare Tube Diameter | 25-219MM |
| Fin Height | 5-35MM | Application | Finery Industries,Heat Exchangers, Power Plant, Power Generation's Cooling System, Refinery Air Cooler , HVAC systems, Air Conditioning and Ventilation systems |
| Brand Name | YUHONG | Certification | ABS, BV, ISO, ASTM, SGS |
| Place of Origin | China | ||
| High Light | ASTM A335 P22 seamless alloy tube ，studded fin tube for HVAC ，alloy steel studded tube | ||
ASTM A335 P22 seamless studded fin tubes are designed for demanding applications that require maximum heat transfer under high temperature, high pressure, and high-fouling conditions. Made from P22 chromium-molybdenum alloy steel (2.25Cr-1Mo), the tubes offer outstanding resistance to oxidation, creep, and sulfur corrosion at elevated temperatures.
Unlike conventional helical fins, this tube features a series of individually welded studs (pins) on its outer surface. This studded design promotes intense turbulence, disrupts thermal boundary layers, and helps minimize ash or particulate buildup—resulting in higher, more sustainable thermal efficiency. The seamless base tube provides strong pressure containment, while the welded studs ensure a solid, integral bond.
Well-suited for radiant sections of heaters, boiler water walls, and severe-service waste heat recovery units, these tubes can be customized in dimensions and stud layout (pitch, height, diameter) to meet specific process needs.
Base Tube Chemical Composition (%)
| Element | C | Si (max) | Mn | P (max) | S (max) | Cr | Mo |
| Range | 0.05–0.15 | 0.50 | 0.30–0.60 | 0.025 | 0.025 | 1.90–2.60 | 0.87–1.13 |
Mechanical Properties (Base Tube)
| Tensile Strength (min) | Yield Strength (min) | Elongation (min) |
| 415 MPa | 205 MPa | 30% |
| ASTM | EN/DIN | UNS | JIS | GB | Common Name |
| A335 P22 | 10CrMo9-10 | K21590 | STPA24 | 12Cr2MoG | 2.25Cr-1Mo / T22 |
|
Property / Grade |
P11 |
P22 |
P91 |
|
Material Type |
Heat-resistant ferritic alloy steel |
Ferritic alloy steel (seamless tube) |
Martensitic alloy steel |
|
Key Characteristics |
Excellent corrosion & oxidation resistance; Good weldability. |
High elasticity & tensile strength; Crack-resistant; Good thermal conductivity. |
High creep strength & thermal resistance at elevated temperatures. |
|
Typical Applications |
Power generation, chemical plants, high-pressure & high-temperature environments. |
High-pressure steam systems, boilers, heat exchangers in petrochemical plants. |
State-of-the-art power generation systems, advanced boilers, ultra-supercritical steam turbines. |
|
Chemical Composition (Key) |
C: 0.05-0.15% |
(Focused on physical properties) |
Cr: 8.00-9.50% |
|
Mechanical Properties (Min.) |
Tensile Strength: ≥415 MPa |
Tensile Strength: ≥415 MPa Yield Strength: ≥205 MPa |
Tensile Strength: ≥585 MPa |
● Refinery & Petrochemical Heaters: Radiant wall and shield tubes in cracking furnaces, reformer heaters, and coker heaters exposed to direct flame impingement and coking.
● Power Generation Boilers: Membrane water-walls in coal-fired, biomass, and waste-to-energy boilers to maximize heat absorption and minimize slagging.
● Syngas & Process Gas Coolers: Quench coolers and waste heat boilers in chemical plants (e.g., ethylene, methanol) handling dusty or fouling gases.
● Carbon Black & Incineration Plants: Heat exchanger tubes in reaction furnaces and off-gas cooling sections with heavy particulate loading.
● High-Temperature Fluidized Bed Systems: In-bed heat exchanger tubes requiring abrasion resistance and optimized heat pick-up.
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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