Aluminium High Frequency Welded Tube (HFW Pipe)

 

Aluminium High Frequency Welded Tube is also called Aluminium HFW Pipe. It is manufactured by forming a flat strip of aluminium into a tubular shape and then joining the edges by a high-frequency-welding process, and seam welded without the use of any filler material. The welded tube is then adjusted in size until reaching the exact size and tolerances.

 

The welded tube is a kind of composite tube. The main difference between extruded and drawn tubes is the possibility to have a weldable layer material of different aluminium alloys. Generally, the core material is 3003 and the clad weldable alloy is 4343 or 4045. It is widely used in tubes for heat exchanger production to enable furnace or flame to braze and to give sacrificial corrosion resistance.

 

In addition to the welded tube with a weldable alloy, we also supply another kind of aluminium composite tube, which is an al-al composite drawn seamless tube with multi-layer material, mainly used as condenser header pipe.

 

 


As one of the leading tubing manufacturers in China, CHAL Aluminium Corporation supplies a variety of aluminium tubes, including aluminium radiator tubes, aluminium charge air cooler tubes, condenser tubes, aluminium round tubes, micro-channel tubes, drawn tubes, seamless tubes, drawn seamless tubes, composite tubes, and welded tubes.


Our aluminium high frequency welded tubes are manufactured with high precision and extremely low tolerance to meet the customer's specific requirements, and welded tubes can be created in a variety of different sizes and shapes from a wide range of alloys. The most common shapes are round, flat, oval, rectangular and square, thin-walled or thick-walled aluminium tubes are also available. The general standard inventory sizes and customized specifications are available for inquiry.

 

 


Options of Aluminium Welded Tubes

1. Flat oval welded tubes for radiators (high frequency welded radiator tube). 

2. Tubes with inserted turbulators (high frequency welded intercooler tube).

3. Round tubes for condenser header (parallel-flow condenser high-frequency header pipe). 

4. Aluminium folded multi-channel tube. 

5. Battery case for new energy automotive.

 

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Step1: Load Aluminium Strip by Vacuum Chuck

Vacuum chuck, reducing knocking and touching caused by manually operating.

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Step2: Tube Forming to Shape

Flat strip is made into almost final tube shape by forming roller and led into welding station.

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Step3: Welding

There is no spark or little spark when producing at welding station.

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Step4: Cooling

To be cooled down by chilled-water.

Step5: Scraping

Step5: Scraping

Two separate moveable scrapers can reduce the height of weld seam and smooth its surface.

Step6: Calibration

Step6: Calibration

Calibrated by calibration roller after being scraped.

Step7: Cutting

Step7: Cutting

Step8: Labelling and placing onto pallet tidily

Step8: Labelling and placing onto pallet tidily

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