H Type Finned Tubes Square Finned Tube SA210C For Boiler Pressure Parts
Price:
USD 5,000-50,000 / Set
MOQ:
1 Set
Delivery Time:
30-60 working days after deposit
Brand:
Boyu
Product Description
High-Efficiency H-Type Finned Tubes (Square Finned-tube) for Boiler Pressure Parts
Usage and Application
H-type finned tubes are advanced heat exchange elements utilized primarily in the economizers and waste heat recovery systems of utility and industrial boilers. By recovering residual heat from the flue gas to preheat the boiler feedwater, they drastically improve the overall thermal efficiency of the facility. For utility-scale energy projects—such as 330MW coal-fired power plants—maximizing heat recovery in the tail-end flue without succumbing to severe ash blockages is critical. H-type finned tubes provide the ideal balance of highly efficient heat transfer and rugged durability required for continuous, base-load power generation.
Technical Advantages
The H-type finned tube derives its name from its unique geometry: two rectangular steel fins are welded symmetrically to a base bare tube, forming a shape that resembles the letter "H". This structural design offers superior engineering advantages over traditional bare tubes or spiral finned tubes:
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Anti-Fouling & Self-Cleaning: The rectangular fins are aligned to form straight, uniform channels for the flue gas. This prevents the severe ash bridging and fouling common in spiral fins, significantly reducing maintenance downtime in high-ash environments like coal-fired plants.
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Exceptional Wear Resistance: The robust H-shaped profile naturally guides the abrasive fly ash parallel to the fin surface, drastically reducing the erosion rate on the base tube and extending the operational lifespan of the boiler pressure parts.
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Compact & Lightweight Design: By expanding the heat transfer surface area, H-type economizers require far less physical space and total steel weight than bare-tube economizers, lowering the structural load on the boiler framework and reducing overall capital expenditure.
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High Weld Integrity: We utilize advanced flash resistance welding or high-frequency welding to fuse the fins to the base tube, ensuring a high-strength metallurgical bond with exceptional thermal conductivity.
Typical Parameter Specifications
| Specification | Technical Details (Utility & Industrial Scale) |
| Equipment Component | Boiler Economizer / Heat Recovery Steam Generator (HRSG) |
| Base Tube Diameter | 25 mm to 73 mm (Customizable based on design pressure) |
| Fin Pitch (Spacing) | 10 mm to 30 mm |
| Fin Material | Carbon Steel, ND Steel (Corten), Stainless Steel |
| Base Tube Material | Seamless Carbon Steel, Alloy Steel (e.g., SA210C, 15CrMoG) |
| Welding Technology | High-Frequency Resistance Welding / Flash Welding |
| Target Application | Coal-fired utility boilers, Biomass boilers, Waste Incinerators |
About Boyu Heavy Industry Technology
As a premier global manufacturer and a trusted fabrication partner for EPC contractors executing complex international power generation projects, Boyu Heavy Industry Technology provides world-class boiler pressure parts. We are fully equipped to supply complete, custom-engineered economizer modules, ensuring that our partners can seamlessly integrate high-quality components and hit their aggressive Commercial Operation Dates (COD) on schedule and on budget.
Frequently Asked Questions (FAQ)
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Why choose H-type finned tubes over spiral finned tubes for coal-fired boilers?Spiral finned tubes create extreme turbulence and have complex geometries that easily trap fly ash, leading to rapid fouling and high erosion rates. H-type fins create a streamlined, straight-through flow path that allows abrasive, ash-laden flue gas to pass smoothly, making them vastly superior for solid-fuel combustion.
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Can H-type finned tubes be manufactured as "Double H" tubes?Yes. We manufacture both single H-type (one base tube) and double H-type (two parallel base tubes sharing a single wide fin) configurations. The double H-type provides even greater structural rigidity and allows for an exceptionally compact economizer arrangement.
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What materials are used for highly corrosive flue gas environments?If the boiler is firing high-sulfur fuel, the economizer is at risk of low-temperature dew point corrosion. In these cases, we fabricate the fins and base tubes using ND steel (a specialized anti-sulfuric acid dew point corrosion steel) or high-grade stainless steel to guarantee longevity.
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Company
BOYU Heavy Industry
Location
Room 912, Building A, 530 Middle Tianfu Avenue, High-Tech Zone, China (Sichuan) Pilot Free Trade Zone, Chengdu, Sichuan, China
Contact Person
Nathan