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） |
| Base Tube Standard | ASTM A179 |
| Type | Wound, L Type, LL Type, KL Type |
| Bare Tube Diameter | 16mm-63mm |
| Fin Pitch | 2.1mm-5mm |
| Fin Hight | <17mm |
| Fin Thick | ~0.4mm |
| Application | Petrochemical, Power Generation, HVAC Industries |
| 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） |
| Base Tube Standard | ASTM A179 | Type | Wound, L Type, LL Type, KL Type |
| Bare Tube Diameter | 16mm-63mm | Fin Pitch | 2.1mm-5mm |
| Fin Hight | <17mm | Fin Thick | ~0.4mm |
| Application | Petrochemical, Power Generation, HVAC Industries | Brand Name | YUHONG |
| Certification | ABS, BV, ISO, ASTM, SGS | Place of Origin | China |
| High Light | L-Type Wound Finned Tube ，HRSG Wound Finned Tube ，Boilers Wound Finned Tube | ||
ASTM A179 L-Type Wound Finned Tube is a cost-effective heat transfer solution designed for moderate-temperature applications. It features a seamless low-carbon steel base tube (ASTM A179) with L-shaped aluminum fins mechanically wound under tension. This robust construction creates maximum fin-to-tube contact area, delivering 25% higher heat transfer efficiency than bare tubes in boilers, economizers, and heat recovery units. Ideal for non-corrosive environments up to 150°C (302°F), it balances performance and budget with minimal maintenance.
| Element | Content (%) | Role |
| Carbon (C) | ≤ 0.06 | Weldability |
| Manganese (Mn) | 0.27–0.63 | Strength |
| Phosphorus (P) | ≤ 0.035 | Purity |
| Sulfur (S) | ≤ 0.035 | Ductility |
| Silicon (Si) | ≥ 0.10 | Deoxidation |
| Thermal Conductivity | 51.9 W/m·K (Base) | 204 W/m·K (Fin) |
| Property | Base Tube (A179) | Aluminum Fin (1100) |
| Tensile Strength | ≥ 325 MPa | 95–125 MPa |
| Yield Strength | ≥ 180 MPa | 35–50 MPa |
| Max Service Temp. | 260°C (500°F) | 150°C (302°F) |
| Fin Bond Strength | – | > 35 MPa (Tested per ASTM E8) |
| Recommended Medium | Steam/Hot Water | Air/Gases |
· Power Plant Boilers: Economizer sections for flue gas heat recovery.
· HVAC Systems: Air heating coils in commercial ventilation units.
· Industrial Dryers: Conveyor belt dryers for food/paper processing.
· Thermal Oil Heaters: Secondary heat exchangers in hydraulic systems.
· Biomass Energy: Low-pressure steam generators.
4. Why Choose Our Wound Fin Tubes?
· 30% Cost Saving: Most economical finned tube solution vs. extrusion/welding.
· Easy Installation: Lightweight design reduces structural support needs.
· Scale Resistance: Smooth aluminum fins minimize ash/fouling buildup.
· Rapid Delivery: Standard sizes (OD 19–50mm, Length ≤ 12m) in stock.
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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