APPARATUS FOR FORMING A REFRACTORY COATING ON THE INNER PERIPHERY OF A TUBULAR OBJECT

摘要

Means to vapor-coat the inside of a tubular object includes an annular heater surrounding a portion of the object, a lance-nozzle extending within the object. The nozzle is transversely aligned with and fixed with respect to the heater. Means effect relative longitudinal motion between the tubular object and the aligned heater and nozzle.