1964年,我们公司在某铝氧厂的工业管道和设备的保温工程中,比较成功地采用了沥青玻璃棉毡做保温层,收到了良好的技术经济效果。据初步计算,全部工程至少可节约五十万元。该厂绝大部分的工艺管道和设备,原来考虑采用泡沫混凝土制品作主保温 In 1964, our company successfully used bitumen glass wool felt as insulating layer in the thermal insulation engineering of industrial pipes and equipment in an aluminum oxide plant, and received good technical and economic results. According to preliminary calculations, all projects can save at least 500,000 yuan. Most of the plant’s process pipelines and equipment were originally considered to use foamed concrete products as main insulation.