
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:
Specifications:
Items | General Materials | Popular ASTM /ASME Materials |
Core Tube Material | Carbon Steel | 1. Carbon Steel: A106 / A179 /A192 / A210 etc... |
Studs | Carbon Steel | 1. Carbon Steel |
Dimensions Data Sheet We're Supplying.
General Descriptions of H-fins | Popular Specifications we make |
Tube OD(mm) | 25mm to 73mm |
Tube Wall thickness(mm) | 2.5mm Min. |
Tube length(mm) | 18000mm Max. |
Fin thickness(mm) | 1.5mm to 3.5mm |
Fin pitch(mm) | 10mm Min. |
Please email us for more information. |
JIANGSU RELIANCE THERMAL EQUIPMENT CO., LTD
About Reliance
Jiangsu Reliance Thermal Equipment Co., Ltd is all about thermal transfer finned tubes products. We have a long-term fabrication and supply experience in the business of FINING MACHINES and FINNED TUBES used in air-cooled heat exchanger, economizers, boilers, gas turbines, refining and petrochemical industries ect.
Advantages
FINNED TUBES PRODUCTS & SERVICE AVAILABLE
I. Mechanical-forming thermal-transfer tubes |
▲ DR type - Extruded high fin tube (solid and serrated fins) ▲ L type - Tension wound spiral fin tube ▲ LL type - Overlapped footed spiral fin tube ▲ KL/KLM type - Tension wound knurled footed fin tube ▲ G base type - Embedded fluted fin tube ▲ Low Fin type - integral low fin tube (knurled option) ▲ I type - Crimped spiral fin tubes ▲ Corrugated tube, spiral tube, U tube bundles ▲ Elliptical Finned Tubes |
2. Welding-forming thermal-transfer tubes |
▲HFW type - ERW High frequency resistance welding fin tube(Solid & Serrated Fins) ▲H/HH type - DC welding square or rectangular fin tube) ▲Studs type - ERW studded tube) ▲Longitudinal welding fin tube (standard ,perforated,cut & twist) ▲Single Row Flat finned tube |
3. Others service on request |
▲Elbows, bends, U-tube, tube swaging ▲Tube spacer box (Material: Stainless Steel, Aluminum,Galvanized/Zinc) |
Fabrication Capacities
(1) Fourteen extrusion fining lines, daily capacity around 15,000 meters
(2) Five type L/LL/KL fining lines, daily capacity around 5000 meters
(3) Seven G- base fining lines, daily capacity around 7000 meters
(4) Two ERW studding lines, daily capacity around 80000 studs
(5) Four ERW High Frequency Spiral fining lines, daily capacity around 30 tons
(6) Three bending machines, maximum capacity 76X4
(7) Five DC ERW H/HH fining lines, daily capacity around 20 tons
(8) One PLC high speed punch presser
Reliance have become a qualified manufacturer and reliable supplier for high-quality thermal transfer finned tubes used in air-cooled heat exchanger,economizers,boilers,gas turbines,refining and petrochemical industries ect.
If you are interested in any of our products, please do not hestitate to contact us @reliancemfg@126.com