GB/T 1222-2007 Spring steels (Text of Document is in English) - Beijing translation compay

Foreword
1 Scope
2 Normative References
3 order Contents
4 Dimension, Shape, Weight and Permissible Deviation
5 Technical Requirements
6 Test Methods
7 Test Rules
8 Packing, Marking and Quality Certificate
Annex A (Normative) Size, appearance and permissible deviation of flat hot rolled bar
Annex B (Normative) 28 MnSiB Technical Conditions
Annex C (Informative Annex) Characteristic Value of 28 Music