排水管。WSA湿法硫酸生产工艺——玻璃管（玻璃管，WSA冷凝器——第1组带法兰的主管）

The acid removal tubes used in WSA wet acid production technology are made of quartz glass. Their main operational advantages are as follows: Excellent resistance to thermal shocks: the coefficient of linear expansion is very small, which is only 1/10-1/20 of the coefficient of borosilicate glass, so when operating, cracking or tearing of pipes is practically excluded; Outstanding heat resistance: the normal working temperature reaches 1200°C, and the limit operating temperature can reach 1300°C; High resistance to acid corrosion: effectively resists acid corrosion, while in the process of long-term operation does not accumulate.