北京加气砼工业发展至今已有近20年的历史,目前实际投产的有三家工厂,在生产应用和科研工作方面也已取得了很大进展。加气砼产品在北京建材市场上虽仍供不应求,但是,不可否认还存在不少问题,如屋面板问题就比较突出。不少同志提出为什么北京当前屋面板得不到发展?在有些标准图中为什么取消屋面板?根据本人的分析大致有以下几方面的原因。 The history of industrial development in Beijing has been nearly 20 years. At present, there are three factories actually put into operation. Great progress has also been made in production applications and research work. Aerated helium products are still in short supply in the building materials market in Beijing, but it is undeniable that there are still many problems, such as roof paneling issues are more prominent. Many comrades raised why Beijing’s current roof plate is not developed. Why does the roof plate be cancelled in some standard maps? According to my analysis, there are roughly the following reasons.