标准号:IS 1731-1971
发布日期:1971/7/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard specifies dimensions, weights and sectional areas of hot-rolled steel flats for structural and general engineering purposes.1.1.1 This standard is mainly intended to cover flats made from steel conforming to IS: 226-1969*, IS : 961-1962〓, IS : 1977-1969〓 and IS : 2062-1969§.