H/HH Fin Tube Square Rectangular Fin Tube Plate Finned Tube
In order to improve the boiler efficiency, the outer surface area (or inner surface area) of the boiler tube is generally increased by adding H fins on the surface of the boiler tube, thereby achieving the purpose of improving boiler efficiency.
H fin tube known as square fin tube, There are two type of H fin tubes, one type with single tube, normal called square fin tube, the other with Double tube, normal called rectangular fin tubes. and also manufactured as per customers requirements. Due to rectangular shapes, which can offer large surface area compared to the Spiral Finned tubes. Due to larger surface area available, these finned tubes are used mostly in Air Heating application to reduce the overall size of the equipment.
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.
1. Anti-corrosion
2. Wear resistance (Anti-wear)
3. Low contact resistance (lower contact resistance)
4. High Stability (Higher Stability)
5. Anti-ashing ability
Description:
Base Tube O.D
(mm) |
Base Tube Thickness (mm) |
Fin Height (mm) |
Fin Thickness(mm) |
Fin Pitch(mm) |
| 25.4 mm ~50.8 mm |
2.5 mm ~5.0 mm |
0.5 mm ~20.0 mm |
0.5 mm ~3.0 mm |
5 mm ~ 25.4 mm |
| Base Tube Material |
Fin Material |
Tube Length (Mtr) |
| Carbon Steel ,Alloy Steel ,Stainless Steel |
Carbon Steel ,Alloy Steel ,Stainless Steel,Aluminium,Copper |
≤ 15Mtrs |
Manufacturing Process
Square or Rectangular H Fins are welded on a steel base tube. We call it H Fin Type Tubing.
Acceptance Criteria
Approved drawing and the delivery conditions (TDC) of clients.
Additional Services
Tube swaging, elbows, bends(90° / 180° or as per client's design).
Quality Tests
The Square or Rectangualr H Finned Tube quality is assured by hydrostatic or pneumatic tests, eddy current tests and tensile tests in order to verify the mechanical bonding between inner tubes and outer fins.
Surface Coating
Outside-Red oxide zinc phosphate primer and inside volatile corrosion inhibitor (VCI) in water soluble tablet form.
Delivery Condition: Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of Square or Rectangualr Fin Tube.
Applications:
- Economizers ,
- Heat exchangers
- Marine boilers
Specifications:
| Items |
General Materials |
Popular ASTM /ASME Materials |
| Core Tube Material |
Carbon Steel
Alloy Steel
Heat Resistant Steel,
Stainless Steel
|
1. Carbon Steel: A106 / A179 /A192 / A210 etc...
2. Stainless Steel: TP304/304L,TP316/TP316L, TP347 etc...
3. Alloy Steel: T11,T22
|
|
Studs
Material
|
Carbon Steel
Stainless Steel
|
1. Carbon Steel
2. Stainless Steel:
TP409/410,TP304/304L,TP316/TP316L etc...
|
Dimensions Data Sheet We're Supplying.
|
General Descriptions of H-fins
|
Popular Specifications we make
|
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Tube OD(mm)
|
25mm to 73mm
|
|
Tube Wall thickness(mm)
|
2.5mm Min.
|
|
Tube length(mm)
|
18000mm Max.
|
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Fin thickness(mm)
|
1.5mm to 3.5mm
|
|
Fin pitch(mm)
|
10mm Min.
|
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Please email us for more information.
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Product Tags:
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HH Square Fin Tube Thickness 65mm Rectangular Plate Images
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