Finned Tube: Seamless Serrated Finned Tubes
Serrated Fin Tube is with cut or serrated steel strip welded on base tube by high frequency welding technique. The cut fin strip with serrated fins is helically wound on edge around the outside surface of the tube and attached to the tube with a continuous fillet weld on one side of the fin.
- Base Tube Material:
CS (A106, A333, A179, A210, P5, P11, P22)
SS (SS304, SS316, Duplex SS2205, Super Duplex SS32750)
Nickel Alloys (825, Inconel Alloy 625, High chrome high nickle incoloy alloy Monel 400) - Tube OD:15.88mm~273mm or customized
1. Seamless Serrated Finned Tubes Offer Highly Efficient Heat Dissipation Due to Their Unique Structure
Seamless serrated finned tubes consist of a seamless base tube and integrated serrated fins. The fins are precisely bonded to the base tube, eliminating seams.
This design significantly increases the heat dissipation area while reducing the increased thermal resistance caused by gaps in traditional finned tubes. Heat can be directly and rapidly conducted from the base tube to the fins, laying a solid structural foundation for efficient heat exchange, especially achieving a multiple-fold increase in heat dissipation area within a limited space.
2. Superior Performance is the Core Advantage of Seamless Serrated Finned Tubes
During heat exchange, the serrated fins break the airflow boundary layer, accelerating air turbulence and significantly improving the convective heat transfer coefficient. Heat transfer efficiency is more than 30% higher than that of ordinary finned tubes.
The seamless structure and selection of high-quality materials give it excellent corrosion resistance and oxidation resistance, maintaining stable performance even under complex operating conditions such as high temperature and high humidity, extending equipment lifespan and reducing maintenance costs.
3. Seamless Serrated Finned Tubes in Industrial and Domestic Applications
In industry, it plays a crucial role in heat exchangers in chemical, power, and metallurgical industries;
In the domestic sector, it can be found in everything from centralized heating systems to air conditioning condensers and wall-hung boiler heat exchangers.
Its application not only improves the energy efficiency of various equipment but also contributes to energy conservation and emission reduction, making it an indispensable core component in modern heat exchange equipment.
Package
Tube ends straight cut or beveled, ends with plastic cap covered
Sea worthy package for transportation free from damage.
To avoid any mistanderstanding on your enquiry, we request you to provide the following datas.
Core Tube (Base Tube) Material and Quantity
Base Tube OD * tube wall thick * length
Fin Type and Fin Material
Fin Dimensions: Fin OD * Fin Thick * Fin Pitch * Unfinned Length at two sides
Serrated fin details such as serrate numbers, serrate depth and width
Tube ends with straight plain cut or with beveled.
- Datasheet
- Drawing
- Certificates
| Parameter | Seamless Serrated Finned Tube Specifications |
|---|---|
| Base Tube Material | CS (A106, A333, A179, A210, P5, P11, P22), SS (SS304, SS316, Duplex SS2205, Super Duplex SS32750), Nickel Alloys (825, Inconel Alloy 625, High chrome high nickel incoloy alloy Monel 400) |
| Tube OD | 15.88 mm ~ 273 mm or customized |
| Tube Wall Thick | 2 mm ~ 28.6 mm |
| Length | 1 Meters to 28 Meters (92 feet) |
| Fin Material | CS (08F, SPCC), SS (SS304, SS316, 409, 410, 321, 347) |
| Fin Height | 8 mm ~ 35 mm |
| Fin Thick | 1 mm ~ 1.5 mm |
| Fin Pitch | 3 ~ 333 FPM (1 FPI ~ 7 FPI) |
| Fin Type | Solid, U Type, S Type, Serrated |
| Finned tube welding rate | more than 98% |
| Tube Ends | Plain cut or beveled at any degree |
Seamless Serrated Finned Tube Appearance Dimension Inspection
Seamless Serrated Finned Tube appearance dimension inspection is one of the important links to ensure the quality and performance of fin tubes.
The inspection items mainly include fin height, fin spacing, fin thickness, base tube wall thickness and outer diameter, etc.
Datang Seamless Serrated Finned Tube Bending Processing
Bending of fin tubes is an important step in the production process of seamless serrated fin tubes. Bending is to bend the serrated fin tube material through specific mechanical equipment to form a suitable curvature to meet different usage requirements.
This step requires strict control of the bending angle and curvature to ensure the fit between the fin and the base tube and the heat dissipation effect.
Seamless Serrated Finned Tube Pull Off Test
Seamless serrated finned tube pull-off test is a test used to detect whether the fin tube will fall off when subjected to tension, mainly used to ensure the quality and reliability of the fin tube.
Datang’s this test is very important in the production process because the serrated finned tubes will be subjected to various stresses during operation, such as temperature changes and pipe expansion, which may cause the fin to fall off, thereby affecting the performance and safety of the heat exchanger .
