High Frequency Welded Carbon Steel Finned Tube
High-frequency welded carbon steel finned tubes are heat exchange elements manufactured using high-frequency current welding technology. They consist of a carbon steel tube (base tube) and a carbon steel strip (fin), with high-frequency induction heating used to achieve a metallurgical bond between the fins and the base tube.
- 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
Product Details
I. High Frequency Welded Carbon Steel Finned Tube
Industrial finned tube radiators are generally used for heating or cooling air and are characterized by their compact structure and large heat exchange surface area per unit volume. The main component is the high-frequency welded finned tube.
Working Principle of High Frequency Welded Spiral Finned Tube
Based on the skin effect and proximity effect of high-frequency current, the fin and the outer surface of the base tube are rapidly heated to a plastic state or melted during the welding process. Welding is then completed under pressure, forming a strong solid-phase welded joint without the need for filler wire or flux.
II. High Frequency Welded Carbon Steel Finned Tube Partial Parameters:
High-frequency welded spiral finned tubes have a large annual production capacity.
Product parameters: Tube diameter: φ25-φ219mm
Fin thickness: 0.8-3.5mm
Fin spacing: 3-75mm
Finned tube length: ≤30m
III. High Frequency Welded Carbon Steel Finned Tube Application Scope:
High Frequency Welded Carbon Steel Finned Tubes are widely used by manufacturers of flame heating furnaces, heat exchangers, marine boilers, economizers, power plant boilers, waste heat boilers, waste heat recovery devices, and air heaters.
RFQ
1.CS Boiler Tubes, ASTM A214 – Finned Type —— January 24, 2026
CS TUBE, ASTM A214,ID: 25.4MM,LG:9144MM
TUBE, METALLIC; TYPE: FINNED
MATERIAL:CS
MATERIAL SPECIFICATION: ASTM A214
INSIDE DIAMETER: 25.4 MM
LENGTH: 9144MM
FFT: SIZE: 13 BWG, A-1145/1200
NOS 400
- Datasheet
- Drawing
- Certificates
| Parameter | Specification |
|---|---|
| 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 |
High Frequency Welded Carbon Steel Finned Tube Appearance Dimension Inspection
High frequency welded carbon steel 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.
High Frequency Welded Carbon Steel Finned Tube Bending Processing
Bending of fin tubes is an important step in the production process of high frequency welded carbon steel finned tubes. Bending is to bend the finned 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.
High Frequency Welded Carbon Steel Finned Tube Pull Off Test
High frequency welded carbon steel finned tubes 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 high frequency welded carbon steel 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 .
