YUHONG HOLDING GROUP CO., LTD
| Payment Terms | TT, LC |
| Supply Ability | 1000 tons/month |
| Delivery Time | 35-60 days |
| Packaging Details | Ply-wooden Case With Iron Frame |
| Product | Fin Tubes or Finned Tube |
| Finned Tube Type | Serrated Spiral Fin Tubes |
| Serrated Finned Tube Standard | ASTM A335 |
| Serrated Finned Tube Material And Data | P9 Base Tubes O.D. 88.9MM, W.T.5.49MM |
| Serrated Finned Tube Fin Material And Data | CS Material, W.T. 1.52MM |
| Serrated Finned Tube Length | According to clients' need |
| Serrated Finned Tube Use | For large equipment, Heat Exchanger / Boiler / Furnaces / Condensers / Evaporators, etc |
| Serrated Finned Tube Packing | Ply-wooden Case With Iron Frame |
| Brand Name | Yuhong |
| Model Number | Serrated Finned Tube ASTM A335 P9 |
| Certification | ABS, BV, DNV, CCS, LR |
| Place of Origin | China |
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Product Specification
| Payment Terms | TT, LC | Supply Ability | 1000 tons/month |
| Delivery Time | 35-60 days | Packaging Details | Ply-wooden Case With Iron Frame |
| Product | Fin Tubes or Finned Tube | Finned Tube Type | Serrated Spiral Fin Tubes |
| Serrated Finned Tube Standard | ASTM A335 | Serrated Finned Tube Material And Data | P9 Base Tubes O.D. 88.9MM, W.T.5.49MM |
| Serrated Finned Tube Fin Material And Data | CS Material, W.T. 1.52MM | Serrated Finned Tube Length | According to clients' need |
| Serrated Finned Tube Use | For large equipment, Heat Exchanger / Boiler / Furnaces / Condensers / Evaporators, etc | Serrated Finned Tube Packing | Ply-wooden Case With Iron Frame |
| Brand Name | Yuhong | Model Number | Serrated Finned Tube ASTM A335 P9 |
| Certification | ABS, BV, DNV, CCS, LR | Place of Origin | China |
| High Light | Power Generation Serrated Finned Tube ，HF Welding Serrated Finned Tube ，ASTMA335 P9 Serrated Finned Tube | ||
Serrated Finned Tube HF Welding ASTM A335 P9 For Power Generation & Boilers
Chemical Composition (%)
| Grade | C | Mn | P | S | Si | Cr | Mo | Ni | V |
| P9 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | ... | ... |
Mechanical Properties
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| P9 | 60ksi (415 MPa) | 30ksi (205 MPa) |
ASTM A335 this standard specification for seamless ferritic alloy-steel pipe for high-temperature service, is a critical material standard for fin tubes used in high-temperature and high-pressure applications, such as power plants, petrochemical refineries, and heat recovery systems.
P9 material has good oxidation & corrosion resistance and better than P11/P22. With excellent high-temperature strength (up to 600°C+) and superior creep resistance for long-term thermal cycling, P9 material is suitable for welding & fabrication (requires post-weld heat treatment).
Design Features Serrated Finned Tubes
Serrated Fins:The fins are serrated, increasing turbulence & heat transfer efficiency by ~20-30% vs. smooth fins and reduces ash fouling in flue gas applications.
Material:Usually carbon steel, stainless steel, alloy or copper, providing durability and resistance to corrosion.
Spiral Configuration:Enhance the heat transfer process.
Welding Process:High-FrequencyResistance Welding ensures strong metallurgical bonding.Post-Weld Heat Treatment (PWHT) required to relieve stresses.
Primary Application
Power plant superheaters
Refinery heaters & reformers
HVAC Systems
Waste heat recovery systems
Specifications For Various Types Of Finned Tubes We Can Do
| Type | Description | Base tube | Fin specification (mm) | ||
| O.D. (mm) | Fin pitch | Fin height | Fin thick | ||
| Embedded | G-type fin tube | 16-63 | 2.1-5 | <17 | ~0.4 |
| Extruded | Single metal / Combined metal | 8-51 | 1.6-10 | <17 | 0.2-0.4 |
| Low fin tube / T-type fin tube | 10-38 | 0.6-2 | <1.6 | ~0.3 | |
| Bamboo tube / corrugated tube | 16-51 | 8-30 | <2.5 | ~0.3 | |
| Wound | L / KL / LL type fin tube | 16-63 | 2.1-5 | <17 | ~0.4 |
| String | String fin tube | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U-type | U-type fin tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3-25 | 5-30 | 0.8-3 |
| H/HH type fin tube | 25-63 | 8-30 | <200 | 1.5-3.5 | |
| Serrated spiral fin tube | 25-219 | 2-7 | <38.1 | 0.9-2.0 | |
| Studed fin tube | 25-219 | 8-30 | 5-35 | φ5-20 | |
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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