Zhangjiagang Dehai Boiler Co., Ltd
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Boiler Spare Parts Double H Finned Tube High Quality finned tube heat exchangers
Boiler Spare Parts Double H Finned Tube Principle
1. H fin tube is a kind of boiler parts, to have two steel circular symmetry to be welded on fluorescent tubes to form fins positive shap much like letter "H", so called H-fin tube. H-economizer widely used in utility boilers, industrial boilers, marine power, such as the tail of heat exchanger components.
3. H-economizer flash resistance welding processes used, the welding seam after the high rate of fusion, weld tensile strength, and has good thermal conductivity. H-economizer can also manufacture dual tube "double H" type fin tubes, its rigid structure, and can be applied to a longer tube row occasion.
Detail
In order to improve the heat exchange efficiency and extend surface heat transfer, H-type finned tubes have been widely used in boilers and waste heat recovery in recent years. H-type finned tubes are derived largely from rectangle finned tubes. Because of their unique groove structure on the fin surface, H-type finned tubes have excellent anti-wear and anti-fouling performance.
Quality Control
1 Impact test and Strength calculation report with applied materials information.
2 100%NDT(non-destructive inspection) report of steel plate, tube and electrode.
3 X-ray, γ-ray and liquid penetrant test inspection report (welding seam): to ensure the quality of the entire boiler.
4 Hydraulic test report: ensure the standard working pressure and safety.
| Name(unit) | Specification(mm) |
| Bare pipe(OD) | 25-300 |
| Bare pipe(Thickness) | 2-30 |
| Fin (Thickness) | 0.4-3.0 |
| Fin (Height) | 5-35 |
| Fin tube thread pitch | 5-35 |
| Fin tube length | ≤15000 |
