Download or read book GB T 5216 2004 Translated English of Chinese Standard GBT 5216 2004 GB T5216 2004 GBT5216 2004 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2015-01-25 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the steel dimensions, shape, weight and permissible tolerances, technical requirements, test methods, inspection rules, packaging, sign and quality certificate etc. of the hot rolling and hot forging structural steels subject to end-quench hardenability requirements. This standard is applicable to the hot rolling and forging structural steel bars of hardenability used in machinery manufacture with its diameter or thickness no less than 30 mm. The steel hardenability is determined by edge quenching or calculated by the formula.