我公司自 1984年以来 ,沥青砂层采用钢模一次成形的施工方法 ,建成金属储罐 34台 ,都已投产使用 ,未发现质量问题。这种方法简便 ,经济可供借鉴。现介绍如下。1　钢模一次成形的步骤1.1　罐基砂垫层施工完毕验收合格 ,在中心点固定一根2 0的圆钢做轴。1.2　钢模按要求制作 ( Since 1984, our company has used the method of one-step molding of steel molds for bituminous sand and built 34 metal storage tanks. All of them have been put into production and use, and no quality problems have been found. This method is simple and economical. The introduction is as follows. 1 Steps for one-shot moulding of steel moulds 1.1 Acceptance of the construction of the foundation sand cushion of the cans is completed, and a round bar of 20 is fixed at the centre point as the shaft. 1.2 Steel molds are made on request (