H Type Finned Tubes Square Finned Tube SA210C For Boiler Pressure Parts
Product Details
| Wear Protection: | Anti-Abrasion | Welding: | GTAW/SMAW/SAW Per WPS & PQR + Mandatory PWHT |
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| Products: | Boiler Pressure Parts | Material Standards: | GB / ASME / IBR / PED / JIS / KS |
| Application: | Power Station / Industrial / Coking / Biomass Boiler | ||
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Product Description
High-Efficiency H-Type Finned Tubes (Square Finned-tube) for Boiler Pressure Parts
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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.
| 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 |
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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.
Product Highlights
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 ...
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