标准摘要
[中文适用范围]： 该修正案提及第 2 条“定义”并规定：删除文本并替换： 公称压力 (PN)：一种数字名称，是方便参考的整数。 由相同 PN 号指定的相同标称尺寸 (DN) 的所有设备应具有兼容的配合尺寸。 另外给出两个注释。 [外文原描述]： The amendment refers to clause 2 'definition' and states: delete the text and substitute: nominal pressure (PN): A numerical designation which is a convenient round number for reference purposes. All equipent of the same nominal size (DN) designated by the same PN number shall have compatible mating dimensions. Gives additionally two notes.
英文名称Pipe components — Definition of nominal pressure — Amendment 1