JIS A1323:1984 pdfダウンロード。Flame Retardant Testing Method for Spark Droplets of Welding and Gas Cutting on Fabric Sheets in Construction Works Scope This Japanese Industrial Standard specifies the flame retardant testingmethods for spark droplets of welding and gas cutting on the fabric sheets in construction works. Remark:The units and numerical values given in ( ) in this standardare in accordance with the International System of Units (SI)and are appended for reference. Classes The incombustibility shall be classified as given in Table 1 accordingto quantities of spark droplets generated. Testing Method SpecimensThe specimens shall be as folows : Number of SpecimensThe number...