Abstract: A process for producing a metal-glass glaze composite pipe including removing corrosion from a metal pipe, simultaneously rotating and translating the pipe through a protective cover operating under a substantially non-oxidating environment and containing an induction pre-heating device and a pair of spray guns. The pre-heating device heats the pipe to a first predetermined temperature while the first and second spray guns apply first and second layers of hot-sprayed, flame-liquefied powdered glaze material to the pipe. An induction post-heater is provided to ensure the quality of seal effected by the layers of glaze material.