<="-,宋体;:#;"> <=":16:#191919;:-;"> <=":16345345> <=":16:#191919;:-;"> <=":163452716、352011333-621333533511201231316106> <=":16:#191919;:-;"> <=":16321316316> <="-;:16-;"><=":16345><=":16的化工设备和管道的优质碳素结构钢和合金钢无缝钢管。6、石油裂化用无缝钢管是适用于石油精粹厂的炉管、热交换器和管道无缝钢管。<=":16>