Download or read book GB T 42677 2023 Translated English of Chinese Standard GB T 42677 2023 GBT42677 2023 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-02-01 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document specifies the requirements for liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections. This document applies to the detection of imperfections on all or part of the surface of steel tubes, and also applies to the detection of hollow profiles.