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在伟大领袖毛主席“以农业为基础,工业为主导”发展国民经济总方针的指导下,我国氮肥工业获得高速度发展,在史无前例的无产阶级文化大革命中,化肥工业更是一日千里,突飞猛进。小化肥厂遍布全国,为化肥工业的发展作出了重要贡献。目前我国氨合成塔内件主要采用18—8型不锈钢、低合金钢和低碳钢制造。18—8型不锈钢的使用寿命虽较长,
Under the guidance of Chairman Mao’s great leader Chairman Mao’s principle of “agriculture is the foundation and industry is the dominant factor”, the nitrogenous fertilizer industry in our country has enjoyed rapid development. In the unprecedented proletarian cultural revolution, the fertilizer industry was booming by leaps and bounds. Small fertilizer plants throughout the country, made an important contribution to the development of fertilizer industry. At present, China’s ammonia synthesis tower internals mainly used 18-8 stainless steel, low alloy steel and low carbon steel. 18-8 stainless steel, although the service life is longer,