Download or read book China Standard: GB/T 5216-2004 Structural steels subject to end-quench hardenability requirements written by www.1clicktong.com and published by Risk Management 1 Click Tong. This book was released on 2020-10-15 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the dimensions, shape, weight, tolerance, technical requirements, test methods, inspection rules, package, marks and quality certificates, etc for the hot-rolled and hot-forged structural steels subject to end-quench hardenability requirements. This standard is applicable to the hot-rolled and hot-forged structural steels and bar steels subject to end-quench hardenability requirements with diameter or thickness not less than 30mm. The hardenability of steel are measured by end-quench method or calculated by formulas.