API Spec 5CT《套管和油管规范》(Specification for Casing and Tubing)作为美国石油学会石油管材的核心标准,已在全世界范围内通用,我国也已直接使用了十多年.近年又以等同采用形式将其制定为我国行业标准.但我们在使用该标准1995年第5版(Fifth edition,April 1,1995)的过程中,发现其美国惯用单位制(U.S.Customary Units)及米制(Metric Units)版本中均有一些编辑性错误.为使该标准能够正确实施,现将所发现的错误列举出来,望使用者注意. API Spec 5CT “Specification for Casing and Tubing” has been used worldwide as the core standard of the American Petroleum Institute’s petroleum tubing, and our country has also been in direct use for over a decade. In recent years, Form it as our national industry standard.But we use the standard in 1995 Fifth Edition (Fifth edition, April 1,1995) in the process, we found that its US customary units (USCustomary Units) and metric system (Metric Units) There are some editorial mistakes in the version, so that the standard can be properly implemented, and the errors found are listed in the user’s note.