| 摘要 |
In a method for producing a vitreous-enamel-coated joining zone (3, 4) on a piece (1, 2) of steel piping, with joining zone (3, 4) having a sealing zone that blends into a product zone (9, 90) via a rounded edge (300, 400), an enamel carrier substrate having a rounded edge (300, 400) with a radius between about 0.5 and 2 mm is formed in the joining zone (3, 4). As the enamel carrier substrate, a material is employed that outgasses only a little or not at all on the side facing away from the enamel, and allows enamelling with little or no base enamel coat. Next, the enamel carrier substrate is coated directly with a highly acid-resistant vitreous enamel, or first with a base enamel, and then with a highly acid-resistant vitreous enamel. |
