首先最重要的一点：如果煤气管道内着火，应立即封闭所有入孔、放散管、采封管，并向管道内通大量蒸汽灭火。
First of all the most important point: if the gas pipeline inner fire, immediately closed all into the hole, radiation tube and sealing pipe, and in general to pipe of steam to extinguish fire.
解决了管道在线维修存在的停输、降压、放散、动用明火等传统的作业方式，避免作业风险，提高安全性，使维修既迅速又经济可靠。
The good quality of products made in the company can prevent the danger at work, improve safety index, and the repair can be finished quickly, safely, and saving money considerably at the same time.
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