IS 961-1975

百检网 2021-08-03
标准号:IS 961-1975
发布日期:1975/4/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard covers the requirements for high tensile steel of two grades designated as Fe 570-HT (St 58-HT) and Fe 540W-HT (St 55-HTw) for use in structural work. Fe 570-HT (St 58-HT) is intended for use in structures where fabrication is done by methods other than welding. Fe 540W-HT (St 55-HTw) is intended for use in structures where welding is employed for fabrication and where guaranteed weldability is required.1.1.1 The steel may also be supplied in copper-bearing quality in which case the two grades shall be designated as Fe 570Gu-HT (St 58-HTC ) and Fe 540CuW-HT (St 55-HTwC).

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