YUHONG HOLDING GROUP CO., LTD
| Supply Ability | 5000 meters/day |
| Product | Serrated Fin Tube |
| Delivery Time | 50-120 days |
| Payment Terms | T/T,L/C |
| Material | ASTM A335 P9 |
| Application | Air Preheaters (APH), Heat Recovery Steam Generators (HRSG), Boiler Economizers, Waste Heat Boilers, Refinery Fired Heaters |
| Package | Iron frame wooden case |
| Packaging Details | Iron frame wooden case |
| Model Number | N/A |
| Brand Name | YUHONG |
| Certification | ISO9001:2015; ISO14001:2015; ISO45001:2018; PED 2014/68/EU; WPS/PQR/WPQ; ISO 3834 |
| Place of Origin | China |
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Product Specification
| Supply Ability | 5000 meters/day | Product | Serrated Fin Tube |
| Delivery Time | 50-120 days | Payment Terms | T/T,L/C |
| Material | ASTM A335 P9 | Application | Air Preheaters (APH), Heat Recovery Steam Generators (HRSG), Boiler Economizers, Waste Heat Boilers, Refinery Fired Heaters |
| Package | Iron frame wooden case | Packaging Details | Iron frame wooden case |
| Model Number | N/A | Brand Name | YUHONG |
| Certification | ISO9001:2015; ISO14001:2015; ISO45001:2018; PED 2014/68/EU; WPS/PQR/WPQ; ISO 3834 | Place of Origin | China |
| High Light | ASTM A335 P9 serrated finned tubes ，serrated finned tubes for air preheaters ，ASTM A335 P9 air preheater tubes | ||
ASTM A335 P9 Serrated Finned Tubes for Air Preheaters are engineered for high-temperature heat recovery systems operating under demanding service conditions. Manufactured with an ASTM A335 P9 seamless alloy steel base tube and carbon steel (CS) serrated fins, these finned tubes provide an excellent balance of thermal efficiency, mechanical strength, and long-term reliability.
The serrated fin design interrupts the airflow boundary layer, increasing turbulence and improving heat transfer performance compared with solid fin designs. This construction also helps reduce dust accumulation, making it suitable for flue gas applications where fouling is a concern.
These finned tubes are widely used in air preheaters, economizers, waste heat recovery units, and industrial heat exchangers where operating temperatures exceed the capabilities of conventional carbon steel tubes.
ASTM A335 P9 serrated finned tubes are commonly installed in high-temperature heat recovery equipment, including:
| Item | Standard Range |
|---|---|
| Base Tube OD | 25.4–63.5 mm (1"–2-1/2") |
| Base Tube Wall Thickness | 2.5–8.0 mm |
| Tube Length | Up to 18,000 mm |
| Fin Height | 8–25 mm |
| Fin Thickness | 0.8–1.5 mm |
| Fin Pitch | 3.5–10 mm |
| Fin Material | Carbon Steel (CS) |
| Base Tube Material | ASTM A335 P9 |
| Manufacturing Process | High Frequency Resistance Welded (HFW/HFW) |
Custom dimensions are available upon request.
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.15 max |
| Manganese (Mn) | 0.30–0.60 |
| Silicon (Si) | 0.25–1.00 |
| Chromium (Cr) | 8.00–10.00 |
| Molybdenum (Mo) | 0.90–1.10 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
Values are based on ASTM A335 material requirements.
| Property | Value |
|---|---|
| Tensile Strength | ≥ 585 MPa |
| Yield Strength | ≥ 415 MPa |
| Elongation | ≥ 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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