Download or read book GB T 7216 2023 Translated English of Chinese Standard GB T 7216 2023 GBT7216 2023 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-04-25 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document specifies the preparation of specimens, inspection items and rating charts, result representation, test reports for metallographic examination of gray cast iron. This document is applicable to the evaluation of the microstructure of gray cast iron.