对邹县发电厂四期工程和系统状况进行了介绍，确定了主蒸汽系统和主给水系统管道的设计参数，选择了管道材料。
Project and system situation in Zouxian Power Plant were introduced, and the piping design parameters and the piping material of main steam system and main feed water system were determined.
目前新建的亚临界机组中，主蒸汽管道及再热蒸汽管道热段的材料已用P 91钢代替P 2 2钢。
Steel P91 has been used instead of P22 as the material for main steam and high temperature reheat steam pipelines in new built subcritical pressure units.
目前新建的亚临界机组中，主蒸汽管道及再热蒸汽管道热段的材料已用P 91钢代替P 2 2钢。
Steel P91 has been used instead of P22 as the material for main steam and high temperature reheat steam pipelines in new built subcritical pressure units.
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