Yuhong Group Co.,Ltd
| Delivery Time | 50-120 days |
| Package | Iron frame wooden case |
| Payment Terms | L/C,T/T |
| Material | ASTM A179 |
| Application | Waste Heat Recovery Boilers |
| Supply Ability | 5000 meters/day |
| Product | Double H-Type Finned Tubes |
| Packaging Details | Iron frame wooden case |
| Certification | ISO9001:2015; ISO14001:2015; ISO45001:2018; PED 2014/68/EU; WPS/PQR/WPQ; ISO 3834 |
| Place of Origin | China |
| Model Number | N/A |
| Brand Name | YUHONG |
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Product Specification
| Delivery Time | 50-120 days | Package | Iron frame wooden case |
| Payment Terms | L/C,T/T | Material | ASTM A179 |
| Application | Waste Heat Recovery Boilers | Supply Ability | 5000 meters/day |
| Product | Double H-Type Finned Tubes | Packaging Details | Iron frame wooden case |
| Certification | ISO9001:2015; ISO14001:2015; ISO45001:2018; PED 2014/68/EU; WPS/PQR/WPQ; ISO 3834 | Place of Origin | China |
| Model Number | N/A | Brand Name | YUHONG |
| High Light | Double H-Type finned tubes ，ASTM A179 carbon steel fin tubes ，Waste heat recovery boiler tubes | ||
Double H-Type Finned Tubes are high-efficiency heat transfer components specifically designed for waste heat recovery boilers, industrial economizers, and energy-saving heat exchanger systems. Manufactured with ASTM A179 seamless carbon steel tubes, these finned tubes provide excellent thermal performance, mechanical reliability, and long service life in applications where recovering heat from exhaust gases is critical.
The unique double H-fin structure consists of two symmetrical rectangular fins welded onto the opposite sides of the base tube, forming an optimized gas flow channel. Compared with conventional plain tubes or standard spiral fin tubes, Double H-type finned tubes significantly increase the external heat transfer area while reducing ash accumulation and improving resistance to gas-side fouling.
ASTM A179 material offers excellent thermal conductivity, good weldability, and stable mechanical performance, making these tubes widely used in coal-fired boilers, gas-fired boilers, biomass boilers, waste incineration plants, power generation systems, and industrial waste heat recovery units.
The double H-fin design expands the heat exchange surface area and enhances turbulence in the flue gas flow, improving overall boiler efficiency and reducing fuel consumption.
The open gas passage between H-shaped fins minimizes dust accumulation and allows easier cleaning compared with tightly packed fin structures, making them suitable for dirty exhaust gas environments.
The fins are securely welded to the ASTM A179 tube surface, providing high structural stability under thermal cycling, vibration, and long-term operation.
Double H-type finned tubes are commonly installed in:
ASTM A179 / ASME SA179
Low carbon seamless steel tube designed for heat exchanger and condenser applications.
The dimensions of Double H-type finned tubes can be customized according to boiler design requirements.
| Parameter | Standard Range |
|---|---|
| Outside Diameter (OD) | 25.4 mm – 63.5 mm |
| Wall Thickness | 2.0 mm – 6.0 mm |
| Tube Length | 3000 mm – 12000 mm |
| Fin Height | 10 mm – 30 mm |
| Fin Thickness | 1.0 mm – 2.5 mm |
| Fin Pitch | 8 mm – 20 mm |
| Fin Width | 20 mm – 50 mm |
(Custom dimensions available according to customer drawings and heat transfer requirements.)
The production process of Double H-type finned tubes includes:
The welding process ensures strong bonding between fins and tubes while maintaining excellent thermal conductivity.
| Element | Maximum Content (%) |
|---|---|
| Carbon (C) | 0.06 – 0.18 |
| Manganese (Mn) | 0.27 – 0.63 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
ASTM A179 is a low-carbon steel grade optimized for heat exchanger applications, providing good forming ability and corrosion resistance in normal boiler operating conditions.
| Property | Requirement |
|---|---|
| Tensile Strength | ≥ 325 MPa |
| Yield Strength | ≥ 180 MPa |
| Elongation | ≥ 35% |
| Hardness | Max. 72 HRB |
These mechanical properties provide sufficient strength for continuous operation under thermal expansion, pressure variation, and repeated heating cycles.
To ensure reliability and compliance with international heat exchanger standards, Double H-type finned tubes undergo comprehensive quality inspections.
Available testing methods include:
ASTM A179 tubes are hydraulically tested to verify pressure resistance and leak tightness.
Final inspection includes:
Inspection documents can be supplied according to customer requirements, including:
| Feature | Double H-Type Finned Tube | Conventional Spiral Fin Tube |
|---|---|---|
| Heat Transfer Area | High | Medium |
| Dust Resistance | Excellent | Moderate |
| Gas Flow Resistance | Lower | Higher |
| Cleaning Performance | Easy | More difficult |
| Suitable for Waste Gas | Excellent | Limited |
Double H-type finned tubes manufactured from ASTM A179 are widely used in:
Recovering energy from high-temperature exhaust gases to produce steam or heat process water.
Improving boiler efficiency by preheating feedwater before entering the boiler.
Increasing energy recovery efficiency in thermal power plants.
Applied in:
Our Double H-type finned tubes provide a reliable solution for improving boiler efficiency and maximizing energy recovery from industrial waste heat sources.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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