Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
Add to Cart
ASTM A179 Tube AL. Tension Wound Finned Tubes For Heat Exchanger
L-type fin tubes are typically embedded or integral fin tubes, which means that the fins are inseparable from the base tube. They are manufactured using specialized processes such as extrusion or roll forming, where the fins are formed directly onto the outer surface of the tube during the production stage. The fin material, often made of aluminum, copper, or stainless steel, is shaped into an "L" configuration during the manufacturing process, giving these tubes their distinctive name. The base tube material can vary depending on the specific application requirements, and it is typically selected for its corrosion resistance and mechanical properties.
| Manufacturing Range ‘L’ FIN TUBE, ‘LL’ FIN TUBE, ‘KLM’ FIN TUBE (WRAP AROUND FIN TUBE) | ||
| Sr. No | Particulars | Range |
| 1 | Base Tube Material | Stainless Steel, Carbon Steel, Alloy Steel, Titanium, Copper, Duplex Stainless Steel, Inconel etc. (all material in the theoretical limit) |
| 2 | Base Tube Outside Diameter | 12.70 mm to 38.10 mm |
| 3 | Base Tube Thickness | 1.25mm And Above |
| 4 | Base Tube Length | 500 mm Min To 15000 mm |
| 5 |
Fin Material
| Aluminum, Copper, Stainless Steel, etc. |
| 6 | Fin Thickness | 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.55mm, 0.60mm, 0.65mm |
| 7 | Fin Density | 236 FPM (6 FPI) to 433 FPM (11 FPI) |
| 8 | Fin Height | 9.8 mm to 16.00 mm |
| 9 | Bare Ends | As per Client Requirement |
| 10 | Manufacturing Capacity | 5,00,000 Meter Per Annum |
| Main Fin tube test equipments | |||||
| Hydraulic test lines up to 40MPa. | |||||
| One under water pneumatic test line. | |||||
| Computer controlled microscope projector. | |||||
| One computer controlled pull-off-off tester. | |||||
| One penetration mirror microscope. | |||||
| One ultrasonic thickness gauge. | |||||
| One Fin Firmness Test equipment |
| Inspections and Tests:G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes | |||||
| 1.Chemical Composition | |||||
| 2.Mechanical Properties | |||||
| 3.Hydrostatic Test | |||||
| 4.Pneumatic Test | |||||
| 5.Boroscopic Inspection | |||||
| 6.Eddy Current Test | |||||
| 7.Tensile Test (only for bimetallic tube) |
Features of L Type Finned Tube
1. The trapezoidal section formed by the calendering of L Type Finned Tube for heat exchanger is consistent with the distribution of heat flow density, the tubes are tightly combined, and the thermal efficiency is high, which eliminates the contact heat caused by the gap between the tubes and the finned tube. resistance, the fin spacing is uniform, and the heat transfer performance is good.
2. The tube can withstand temperatures up to 150°C and there is no risk of atmospheric corrosion or thermal stress.
3. The L-type finned tube provides the contact area between the fin strip and the surface of the tube to protect the tube wall from atmospheric corrosion.
4. This L TYPE design is much more economical than LL, KL or even G-embedded types.
5. Maximum operating temperature: 230°C
Application
1.Operating temperatures less than 300°C;
2.Offshore or other remote applications;
3. Heat pipes;
4. Dry air coolers for air, gas or oil;
5. Air to air heat exchangers for HVAC applications;
6. Air dehumidification in air treatment plants
7. Eenergy recovery in air exhaust system.
8. Chemical and petrochemical industry
9. Food processing plants and refrigeration technology