Products
Finned Tubes
Finned tubes are key components of air cooled heat exchangers; therefore, they must be of the highest possible quality and comply with customer specifications.
We guarantee the highest quality by using raw materials sourced from selected, qualified and reliable European suppliers, carrying out rigorous quality controls at every stage of production, and ensuring strict quality tests before products are dispatched.
The fin groove is mechanically bonded to the tube wall, ensuring optimal heat transfer and adhesion up to 400°C.
Integrated fins (G-Fin) are produced by wrapping strips of aluminum or copper into a helical groove machined into the outer surface of the tube.
MMI specializes in the production of all types of:
- L, KL, LL, G (integrated)
- Extruded finned tubes
Tubes with integrated fins
Tubes with integrated fins are manufactured with a metal core which may vary from:
- SA179 - A179 Carbon steel
- SA213 - A213 | SA249 - A249 - Stainless steel
- Duplex
- Superduplex
- 6% Molybdenum
- Nickel-based superalloy
- Copper-Nickel alloy
- Titanium
With fins made from:
- Aluminum
- Copper
Tubes
High Fin
L, KL, LL, G (integrated)
LL
KL
G-FIN
L-FIN
Extruded finned tubes
Extruded finned tubes are bimetallic tubes whose aluminum outer surface is finned by cold plastic deformation.
Productive Capacities
| Length | Tube Dia. | Tube thk | Finned tube diam. | Fins density | ||||
|---|---|---|---|---|---|---|---|---|
| mm | mm | inch | mm | inch | mm | (fins/m) | (fins/inch) | |
| Extruded | 0,3 ÷ 18,5 | 25,4 ÷ 50,8 | 1” - > 2” | 0,889 ÷ 3,76 | 0,035 ÷ 0,15 | 82,56 | 178 - 280 | 7-11 |
| L-Fin | 0.3 – 20 | 19.05 – 50,8 | 3/4” - > 2” | 0,889 ÷ 3,76 | 0,035 ÷ 0,15 | 82.56 | 152 – 305 | 6-12 |
| LL-Fin | 0.3 – 20 | 19.05 – 50,8 | 3/4” - > 2” | 0,889 ÷ 3,76 | 0,035 ÷ 0,15 | 82.56 | 152 – 305 | 6-12 |
| KL-Fin | 0.3 – 20 | 19.05 – 50,8 | 3/4” - > 2” | 0,889 ÷ 3,76 | 0,035 ÷ 0,15 | 82.56 | 152 – 305 | 6-12 |
| G-Fin | 0.3 – 20 | 19.05 – 50,8 | 3/4” - > 2” | 0,889 ÷ 3,76 | 0,035 ÷ 0,15 | 82.56 | 152 – 305 | 6-12 |
Inspections
To ensure a high-quality product, we carry out rigorous inspections and tests:
- Chemical composition analysis
- Mechanical property testing
- Hydrostatic testing
- Pneumatic testing
- Tensile testing
Applications
Embedded and extruded finned tubes are the main components used in air coolers and the most common applications are the following:
(electric, nuclear, thermal and geothermal power stations)
(steelworks, incinerators, gas compression plants)