Abstract: A method is provided for manufacturing a clad tube comprising a metallic tube coated on the interior surface with a thermally deformable coating material, comprising:(a) coaxially positioning the metallic tube within a cylindrically formed induction coil;(b) coaxially positioning a tube of the coating material within the metallic tube;(c) applying a current to the induction coil such that the induction coil serves as a heater and heats the metallic tube which in turn radiantly heats the tube of coating material to a temperature sufficient to make the coating material deformable; and(d) applying pressure on the interior of the tube of coating material such that the softened tube of coating material deforms to contact and fuse with the interior surface of the metallic tube to form a clad tube. The coating material can be, for example, glass or a thermally deformable resin. Optionally, a magnetic tube can be inserted into the interior of the tube of coating material.