规定了在压力高达19300 kPa且温度在-200摄氏度至+525摄氏度范围内的管道、阀门和配件以及其他含有流体的承压设备上使用的圆形、板坯、凸台、整体铸造或锻造和焊接颈型法兰或公称通径DN 15至DN 3000及其螺栓连接的要求和尺寸。包括碳钢、碳锰钢、低合金钢、不锈钢、灰铸铁、可锻铸铁、球墨铸铁或铜合金法兰，以及相关材料规范。本标准适用于水、蒸汽、压缩空气、化工和石油装置、液压管道以及其他标准要求符合本标准的法兰。包括关于螺栓选择和法兰接头制作方法的建议。本标准不适用于AS 4087涵盖的水或废水法兰。

Specifies requirements and dimensions for circular, plate blank, boss, integrally cast or forged and welding-neck type flanges or nominal sizes DN 15 to DN 3000 and their bolting for use on pipes, valves and fittings and other pressure-retaining equipment containing fluid at pressures up to 19300 kPa and at temperatures in the range -200 degrees Celsius to +525 degrees Celsius. Flanges in carbon steel, carbon-manganese steel, low-alloy steel, stainless steel, grey iron, malleable iron, ductile cast iron or copper alloy, together with relevant material specifications are included. This Standard is applicable to flanges for water, steam, compressed air, chemical and petroleum plants, hydraulic piping and where other Standards require compliance with this Standard. Recommendations on the selection of bolting and method of making flanged joints are included. This Standard is not intended to apply to flanges for water or waste water covered by AS 4087.