ISO 4144:2003根据ISO 7-1规定了用于蒸汽、空气、气体、水、油等普通管道的螺纹连接用不锈钢配件的类型、压力温度额定值、最小尺寸和材料。

ISO 4144:2003 specifies the types, pressure-temperature ratings, minimum dimensions and materials of stainless steel fittings for threaded connections in accordance with ISO 7-1, used for ordinary piping for steam, air, gas, water, oil, etc.