Q/BQB 479-2019 English PDF (QBQB479-2019)

Main Technical Indicators and Test Methods

Q/BQB 479-2019
ENTERPRISE STANDARD OF
BAOSHAN IRON AND STEEL CO., LTD
Replacing Q/BQB 479-2018
Cold-Rolled Strip of Full Hard Carbon Steel
ISSUED ON: FEBRUARY 02, 2019
IMPLEMENTED ON: APRIL 10, 2019
Issued by: Baoshan Iron and Steel Co., Ltd.
Table of Contents
Foreword ... 3
1 Chemical Compositions ... 4
2 Width Tolerance ... 4
3 Inspection and Test ... 4
4 Appendix ... 5
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009 Directives for Standardization – Part 1: Structure and Drafting of Standards.
This Standard was formulated according to the actual production of the Baoshan Iron and Steel Co., Ltd.
This Standard replaced Q/BQB 479-2018.
Compared with Q/BQB 479-2018, this Standard made the following content
modifications as follows:
--- Modify the standard name from “Cold-Rolled Coil of Full Hard Carbon Steel” into “Cold-Rolled Strip of Full Hard Carbon Steel”;
--- Add the requirements for PW.W basic width precision control in Table 3; --- Adjust the tower control requirements from 40mm to 30mm;
--- Add Appendix A Comparison List of Similar Designations.
This Standard’s Appendix A is informative.
This Standard was proposed by Manufacture and Management Department of
Baoshan Iron and Steel Co., Ltd.
This Standard shall be under the jurisdiction of Manufacture and Management Department of Baoshan Iron and Steel Co., Ltd.
Drafting organization of this Standard: Manufacture and Management Department of Baoshan Iron and Steel Co., Ltd.
Drafting staffs of this Standard: Yuan Min, Wang Hui.
The historical edition replaced by this Standard is as follows: Q/BQB 479-2018. Cold-Rolled Strip of Full Hard Carbon Steel
1 Chemical Compositions
Table 4