Helically Wound High Fin Tubes Manufacturer and Supplier in India
Helically Wound High Fin Tubes are heat transfer tubes built by spirally winding a tall aluminium fin strip around a base tube under tension, with the fin foot mechanically locked into the tube surface to keep contact resistance low. Compared to a low integral fin or embedded (G-type) fin, the fin height on a high fin tube is deliberately taller, typically 8 mm to 30 mm depending on the base tube diameter, which multiplies the external surface area available for heat transfer. This makes high fin construction especially effective wherever the outside fluid is air or another low-density gas, since the fin-side film coefficient
is usually the limiting factor in that kind of exchanger. Amardeep Steel is a trusted Helically Wound High Fin Tubes manufacturer and supplier in India, producing precision tubes with aluminium fins in alloys 1050, 1060, 3003, 6061 and 6063, wound onto carbon steel, stainless steel, copper or aluminium base tubes to match the pressure, corrosion, and thermal requirements of the application.
Technical Data
Specifications of Helically Wound High Fin Tubes
| Feature / Parameter | Standard Specification / Available Size |
|---|---|
| Fin Thickness | 1 mm (min) to 3 mm (max) |
| Fin Height | 8 mm (min) to 30 mm (max), depending on base tube OD |
| Fin Density | 50 fins/meter (min) to 200 fins/meter (max), depending on fin thickness |
| Fin Material | Aluminium Alloys 1050, 1060, 3003, 6061, 6063 |
| Winding Method | Helically wound fin strip, under tension, mechanically locked to the tube surface |
| Tube Outer Diameter (OD) | 15 mm (min) to 80 mm (max) |
| Tube Wall Thickness | 1.5 mm (min) |
| Tube Material | Carbon Steel, Stainless Steel, Copper, or Aluminium Alloys |
| Surface Finish | Natural mill finish, anodized, or powder coated (optional) |
| Manufacturing Standard | ASME, ASTM, DIN, BS, EN |
Chemical Properties of Helically Wound High Fin Tubes
| Alloy Grade | Al (%) | Si (%) | Fe (%) | Cu (%) | Mn (%) | Mg (%) | Zn (%) | Ti (%) | Others (Each / Total) |
|---|---|---|---|---|---|---|---|---|---|
| 1050 | 99.5 min | 0.25 max | 0.40 max | 0.05 max | 0.05 max | 0.05 max | 0.07 max | 0.05 max | 0.03 / 0.10 max |
| 1060 | 99.6 min | 0.25 max | 0.35 max | 0.05 max | 0.03 max | 0.03 max | 0.05 max | 0.03 max | 0.03 / 0.10 max |
| 3003 | Balance | 0.60 max | 0.70 max | 0.05–0.20 | 1.00–1.50 | — | 0.10 max | — | 0.05 / 0.15 max |
| 6061 | Balance | 0.40–0.80 | 0.70 max | 0.15–0.40 | 0.15 max | 0.80–1.20 | 0.25 max | 0.15 max | 0.05 / 0.15 max |
| 6063 | Balance | 0.20–0.60 | 0.35 max | 0.10 max | 0.10 max | 0.45–0.90 | 0.10 max | 0.10 max | 0.05 / 0.15 max |
Mechanical Properties of Helically Wound High Fin Tubes
| Component Application | Alloy & Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation A5 (%) |
|---|---|---|---|---|
| Fin Strip Stock | AA 1050-O | 60 – 95 | 20 – 55 | ≥ 25 |
| Fin Strip Stock | AA 1050-H14 | 105 – 145 | 75 – 115 | ≥ 4 |
| Fin Strip Stock | AA 1060-O | 60 – 90 | 20 – 50 | ≥ 30 |
| Fin Strip Stock | AA 3003-O | 95 – 135 | 35 – 60 | ≥ 30 |
| Fin Strip Stock | AA 3003-H14 | 140 – 190 | 115 – 150 | ≥ 8 |
| Base Tube (Aluminium) | AA 6063-T6 | ≥ 190 | ≥ 160 | ≥ 10 |
| Base Tube (Aluminium, High Strength) | AA 6061-T6 | ≥ 260 | ≥ 240 | ≥ 10 |
Applications and Industrial Uses of Helically Wound High Fin Tubes
- Air-Cooled Heat Exchangers (ACHE)
- HVAC Systems
- Condensers
- Economizers
- Boilers & Waste Heat Recovery
- Petrochemical & Refinery Plants
- Power Generation Plants
- Process Instrumentation & Gas Cooling
Frequently Asked Questions
1. What are Helically Wound High Fin Tubes?
Helically Wound High Fin Tubes are heat exchanger tubes with a tall aluminium fin strip spirally wound around a base tube under tension, giving a much larger external surface area than a low-fin or embedded fin tube of the same length.
2. What are Helically Wound High Fin Tubes used for?
They are used in air-cooled heat exchangers, HVAC coils, condensers, economizers, and process gas coolers where air or another low-density gas is the limiting side of the heat transfer and extra fin surface area is needed.
3. How are Helically Wound High Fin Tubes manufactured?
An aluminium fin strip is helically wound under tension around the base tube, with the fin foot mechanically locked or embedded into the tube surface to maintain close contact and low thermal resistance across the fin-to-tube joint.
4. What is the difference between Helically Wound High Fin Tubes and Low Fin Tubes?
High fin tubes use a taller fin, typically 8 mm to 30 mm, to maximize surface area for air-side or gas-side cooling, while low fin tubes use a short, closely spaced fin more suited to liquid-side or higher-pressure service where a lower fin height keeps pressure drop and manufacturing cost down.
5. What base tube materials are compatible with Helically Wound High Fin Tubes?
The base tube can be carbon steel, stainless steel, copper, or aluminium, selected based on the process fluid and pressure rating, while the fin itself is manufactured from aluminium alloys such as 1050, 1060, 3003, 6061 or 6063.
6. Can Helically Wound High Fin Tubes be customized for specific fin height and density?
Yes. Fin height, fin thickness, fin density, and base tube diameter can all be customized within Amardeep manufacturing range to match a specific heat duty and project datasheet.
