| 摘要 |
<p>The invention provides a manufacturing device of a glass base metal including a quartz nozzle and a raw material supply metal pipe, which can raise temperatures as high as possible to raise a production rate. In a connecting structure between a quartz tube (31) for ejecting flames and a metal pipe (51) for supplying gas for the quartz tube (31), connecting terminals of the quartz tube (31) and the metal pipe (51) respectively form respectively butt jointed flanges (61,62), the butting surfaces (65,66) which are respectively butting with each other by utilizing the flanges (61,62) perform closed connection.</p> |
