標(biāo)準(zhǔn)號(hào)：IS 8451-1977
發(fā)布日期：1977/7/1 12:00:00
實(shí)施日期：1999/12/31 12:00:00
適用范圍：1.1 This standard covers the measurement of various external and internal defects by visual inspection and the limiting criteria for the acceptance of high pressure gas cylinders in use, marked with a working pressure of 35 kgf/cm2 or more, on the basis of extent of defects revealed by visual inspec-tion.1.1.1 The limits specified in this standard apply only to cylinders already in use. They do not apply to newly manufactured cylinders.1.1.2 The limits specified in this standard are not intended to apply to cylinders having stress in excess of the usual industrial practice, such as light type cylinders used in underwater breathing apparatus.