Specifies materials, design, construction, installation, testing and maintenance requirements for steel piping systems covered by AS¿¿4645, for the distribution of fuel gas suitable for domestic, commercial or industrial uses, where the pressure of the gas is not greater than 1050¿¿kPa and the operating temperature range of the materials is from (30¿¿C to 120¿¿C; or where the hoop stress level is not greater than 20¿¿% of the specified minimum yield stress of the pipe used in that system.
