It’s a copper conductor shaped into a loop or saddle that generates a high-frequency electromagnetic field to heat the edges of metal pipes for seam welding.
What materials are induction coils made of?
High-conductivity copper (often hollow for water cooling), sometimes enhanced with ceramic insulation or ferrite cores.
Are coils standard or custom-made?
They are typically custom-made based on pipe diameter, welding frequency, and power level.
How does the coil heat the pipe?
The coil induces eddy currents in the pipe surface using high-frequency AC. The resistance of the pipe material converts this into localized heat (due to the skin and proximity effects).
What’s the ideal distance between the coil and the pipe?
Usually 1–3 mm. Too close can cause arcing; too far reduces efficiency.
Modern metal fabrication demands precision and productivity, which is why our roll forming tube mill technology leads the industry in pipe and tube production.
Modern steel processing demands precision and efficiency, which is why our cut to length and slitting machine technology leads the industry in coil processing solutions.
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