标准摘要
[中文适用范围]： 第二版取消并取代了第一版（1980 年）。 指定圆柱螺纹的验证，其尺寸和公差在 ISO 228-1 中给出。 由于该 55o 轮廓具有不同的要验证的元素，因此有必要提供多个 GO 凿孔和多个 NOT GO 凿孔。 [外文原描述]： This second edition cancals and replaces the first edition (1980). Specifies the verification of cylindrical threads, the dimensions and tolerances of which are given in ISO 228-1. Since this 55o profile has different elements to be verified, it is necessary to provide for several GO and several NOT GO gouges.
英文名称Pipe threads where pressure-tight joints are not made on the threads — Part 2: Verification by means of limit gauges