| 摘要 |
<p>The steel piece hot scarfing device is equipped with a lower shield fuel gas nozzle for spraying a shield fuel gas to the bottom surface of a steel piece, a lower shield fuel gas cylinder for supplying the shield fuel gas to the lower shield fuel gas nozzle, a fuel gas supply system for supplying the shield fuel gas to the lower shield fuel gas cylinder, and a water supply system for supplying water to the lower shield fuel gas cylinder.</p> |
