Lord Fin Tube--Galvanised Oval Finned Tube
Galvanised Oval Finned Tube in Heat Transfer Applications
What is a Galvanised Oval Finned Tube? It is a high-performance heat exchanger component that combines an oval-shaped base tube with helically wound or serrated fins, protected by a hot-dip galvanised coating. The oval cross-section reduces air-side flow resistance while the extended fin surface dramatically increases the heat transfer area. This design makes Galvanised Oval Finned Tube a preferred choice for air-cooled heat exchangers, boiler economisers, and industrial radiator systems where thermal efficiency and durability are critical.
Why choose Galvanised Oval Finned Tube over conventional round finned tubes? The elliptical profile offers lower pressure drop across the tube bank, which directly translates to reduced fan power consumption in forced-draft or induced-draft systems. The galvanised layer provides superior corrosion resistance against atmospheric moisture, chemical fumes, and operational condensation, extending service life in outdoor or aggressive environments. Additionally, the fin geometry can be tailored to specific heat transfer requirements, making it a versatile solution for both new installations and retrofit projects.
Galvanised Oval Finned Tube and Heat Transfer Efficiency
How does the Galvanised Oval Finned Tube achieve enhanced thermal performance? The finned surface multiplies the external heat transfer area by a factor of 10 to 20 compared to a bare tube of equivalent length. The oval shape reduces wake formation behind the tube, minimizing flow separation and improving the overall heat transfer coefficient. In practical terms, this means that a heat exchanger equipped with Galvanised Oval Finned Tubes can achieve the same duty with a smaller footprint or lower air flow rate, offering tangible energy savings over the equipment lifecycle.
Key performance advantages: Lower air-side pressure drop, higher heat transfer per unit volume, excellent corrosion protection, extended operational lifespan, and compatibility with high-temperature flue gas applications up to 350°C (with appropriate material selection).
Galvanised Oval Finned Tube for Industrial Sectors
Which industries most commonly specify Galvanised Oval Finned Tube? The component finds widespread application across multiple heavy industries where thermal management is mission-critical. Power generation plants use these tubes in air-cooled condensers and feedwater heaters. Petrochemical refineries employ them in process heaters and waste heat recovery units. HVAC systems for large commercial buildings rely on galvanised finned tubes for efficient heat rejection. Other notable sectors include cement production, steel manufacturing, pulp and paper, and food processing where cleanability and corrosion resistance are essential.
| Industry Sector | Typical Application | Key Benefit of Galvanised Oval Finned Tube |
|---|---|---|
| Power Generation | Air-cooled condensers, boiler economisers | Reduced fan power, corrosion resistance in coastal environments |
| Oil & Gas / Petrochemical | Process heaters, waste heat recovery units | High-temperature durability, resistance to chemical fumes |
| HVAC & Commercial Cooling | Chiller condensers, cooling towers | Enhanced heat rejection, compact footprint |
| Cement & Steel Manufacturing | Clinker coolers, furnace recuperators | Thermal shock resistance, easy maintenance |
| Pulp, Paper & Food Processing | Dryer sections, pasteurisation heat exchangers | Sanitary design, resistance to organic acids |
We represents in Pakistan, some of the World’s well-Prominent Manufacturers & Suppliers, such as:
- M/s IMI / CCI - USA
- M/s Voith Turbo Germany / Middle East FZE Dubai Branch
- M/s Howden® – Spain
- M/s Thermofin – Canada
- M/s TPS Technitube Rohrenwerke GmbH – Germany
- M/s ITT Engineering Valves – Singapore
- M/s Enervek – Greece
- M/s Shenzhen Changyuan New Material Co. Ltd. – China
- M/s Harbin Integrated Power Control Engineering Ltd. – China
as well besides many others.
Lord Fin Tube-- Galvanised Oval Finned Tube
While, our Parent Company :ATL - AL-Tariq Constructors (Pvt.) Ltd. –Karachi – Pakistan, having 40+ years of credible standing in Professional Engineering Services as EPC services providers/contractors in the fields of Mechanical, Electrical, Instrumentation, and Civil Engineering works to large Industrial and Power Projects of Pakistan. AL-Tariq Constructors have accomplished major EPC projects of Power Generation, Oil & gas, Petro-chemicals, and Industrial sectors as well.
ATL has participated for Mechanical Fabrication, Installation Testing, Commissioning of Turn-key JV – Projects, with world prominent Multinational & our National Companies like:
- M/S Hanover Company – USA, (For JJVL – LPG Plant, at Jamshoro –Pakistan)
- M/S ENAR Petrotech Services, Pakistan
- M/S Pakistan State Oil Company Ltd. – (PSO) - Pakistan
- M/S Pak Arab Refinery Company - (PARCO) – Pakistan
- M/S National Refinery Ltd. – (PPL) – Pakistan
- M/S BYCO Oil Co. (BYCO Refinery) Pakistan
- M/S Pakistan Refinery – Karachi
- M/S British Petroleum – Pakistan
- M/S Noell Gastechnik GmbH – Germany
- M/S Stroytransgaz – Russia
- M/S Engro Chemicals, Pakistan
- M/S Water & Power Development Authority – (WAPDA) – Pakistan
- M/S National Power – UK
- M/S China National Machinery Import & Export Corp. (CMEC) – China
- M/S Technopromexport – Russia
- M/S Tomen Power Plant – Japan
- Atomic Energy Commission – Pakistan
- M/S Sumsung Heavy Industries – Korea
- M/S Daewoo Engineering – Korea
- M/S National Engineering Services Pakistan (Pvt.) Ltd. – NESPAK
- M/S SNC Lavilin – Canada
- M/S Heavy Mechanical Complex – Pakistan
- M/S Civil Aviation Authority - Pakistan
- Port Qasim Authority, Bin Qasim – Pakistan
ATL and ATT stands committed to provide excellent services on behalf of our valued principals.
Galvanised Oval Finned Tube Specifications and Standards
How are Galvanised Oval Finned Tubes manufactured and tested? The manufacturing process typically involves resistance welding or high-frequency induction welding of fin strips onto the oval base tube, followed by a hot-dip galvanising bath that deposits a uniform zinc coating (usually 45–85 µm thickness). The galvanised layer provides cathodic protection to the steel substrate, ensuring that even if the coating is scratched, the surrounding zinc will preferentially corrode, safeguarding the base material. Quality control includes dimensional inspection, fin adhesion tests, and coating thickness measurement per ASTM A123 or ISO 1461 standards.
| Parameter | Specification / Value | Remarks |
|---|---|---|
| Tube cross-section (oval) | 30 × 14 × 2 mm | Minor axis × major axis × wall thickness |
| Tube length | 5,200 mm | Standard length, custom lengths available |
| Tube material | STB340-SC (STB35S) | Equivalent to ASTM A179 or A192 |
| Fin material | SPCCT-SD | Low-carbon steel for galvanising compatibility |
| Fin dimensions | 48 × 34 × 1 mm | Outer width × outer height × thickness |
| Fin pitch | 5 mm | Center-to-center spacing of fins |
| Galvanising coating | Hot-dip galvanised, 45–85 µm | Per ASTM A123 / ISO 1461 |
| Drawing reference | DWG.NO: 2091718 | See attached for full dimensions |
| Preferred origin | Europe, USA, Japan, Canada | Certified manufacturers only |
Which material combinations are available for Galvanised Oval Finned Tubes? Beyond the standard carbon steel specification, tubes can be supplied in low-alloy steels (e.g., 12CrMoV, 15CrMo) for elevated-temperature service, or with aluminium-coated fins for enhanced oxidation resistance. The choice of material depends on operating temperature, fluid corrosivity, and mechanical stress requirements. For most industrial applications, the combination of STB340-SC tube with SPCCT-SD fin material and hot-dip galvanising offers an optimal balance of cost, performance, and longevity.
Galvanised Oval Finned Tube Project References
The following RFQ represents a current procurement opportunity for Galvanised Oval Finned Tube from Bin Qasim Power Station (BQPS) of K-Electric Ltd. This inquiry reflects the ongoing demand for high-quality finned tube solutions in the Pakistani power sector.
Kindly go through our Business Group website for more details.
Therefore, it’ll be our pleasure & honor to have a permanent & long lasting Business Association with your esteemed Organization.
In the meantime, we have following RFQ of Bin Qasim Power Station (BQPS) of K-Electric Ltd. For you to submit your Proposal/Offer, against:
| S# | Description | QTY |
|---|---|---|
| 01 | TUBE; FINNED TUBE GALVANISED STEEL, OVAL | 5,600 EA |
NAME: TUBE FINNED GALVANISED STEEL OVAL.
SPECIFICATION:
Kindly send us your Technical Proposal & Commercial Offer on FOB & CIF Karachi Basis (including our 10% Silent Sales Commission), along with supporting documents, technical details/specifications, customer references & certifications of manufacturer etc.
Your Proposal/offer to be addressed, as under:
The Dy. General Manager (Procurement)
K – Electric Ltd.
Procurement Office, Elander Road,
Near Shaheen Complex
Karachi – Pakistan
Your quotation must include the following information:
| Delivery period: | ______________ |
| Offer Validity: | ________________ |
| DIMS / Weight: | _______________ |
| Payment Terms: | ______________ |
| Inco term: | ____________________ |
| Manufactures Name/Origin: | _____ |
| HS Code: | _____________________ |
| Make: | ________________________ |
All material quoted must have material test certificate (Mechanical & chemical properties) /Technical Literature
Please contact us if any clarification required