INDUCTIVE COILS

When using an inductive coil in preheating, it is wrapped around the pipe without any insulation. The coil can be protected against welding spatter with insulation cloth.

When doing post-weld heat treatment, the pipe is first insulated with 20 mm-thick ceramic blanket after which the coil is wrapped around the pipe. The coil is heat resistant up to 400 °C.

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