光端焊接和无缝钢管 管的尺寸和单位长度重量的一览表

[中文适用范围]： 给出通用平端管和精密管的值。 其目的是为国内和国际上与钢管标准化有关的所有活动的尺寸选择提供指导，作为一个现成的计算工具，并避免不同国家使用相同质量的管。 尺寸。 它不适用于主要用于螺纹连接的管子。 第四版取消并取代了第三版（1985 年），其中表 2 和表 3 进行了技术修订，在系列 2 中增加了 12.7 毫米的外径。 [外文原描述]： Gives values of both plain end tubes for general purpose use and precision tubes. Its purpose is to give guidance on the selection of sizes for all activities concerned with the standardization of steel tubes, both nationally and internationally, to serve as a ready reckoner and to avoid the use by different countries of different masses for a tube of the same size. It is not applicable to tubes primarily intended to be screwed. This fourth edition cancels and replaces the third edition (1985), tables 2 and 3 of which have been technically revised by the addition of the outside diameter of 12.7 mm to series 2.