NaOH溶液，濃(nong)度小于(yu)29％，設(she)(she)計壓力1.2MPa，設(she)(she)計溫度為常溫。NaOH溶液的材(cai)(cai)(cai)質選用(yong)(yong)詳述見本書第一章(zhang)。對(dui)于(yu)這(zhe)個工況，管道材(cai)(cai)(cai)料可以選用(yong)(yong)20＃鋼；如果是美標材(cai)(cai)(cai)料，管子選用(yong)(yong)ASTM A106-B無縫鋼管，管件(jian)選用(yong)(yong)ASTM A234-WPB。
