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C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
Four electrique pour la fusion d'une charge non homogene et le melange de la matiere fondue, et procede pour optimiser la fusion d'un oxyde et melanger l'oxyde