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Q/BQB 408-2021 English PDF (QBQB408-2021)

Q/BQB 408-2021 English PDF (QBQB408-2021)

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Q/BQB 408-2021: Low carbon cold-rolled steel sheet and strip for cold forming

This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization ??C Part 1: Rules for the Structure and Drafting of Standardizing Documents. This Document was formulated by reference to JIS G 3141:2017, EN 10130:2006, JFS A 2001:2014.
Q/BQB 408-2021
BQB
ENTERPRISE STANDARD OF
BAOSHAN IRON AND STEEL CO., LTD
Replacing Q/BQB 408-2019
Low Carbon Cold-Rolled Steel Sheet and Strip for
Cold Forming
ISSUED ON: JUNE 04, 2021
IMPLEMENTED ON: AUGUST 10, 2021
Issued by: Baoshan Iron and Steel Co., Ltd.
Table of Contents
Foreword ... 3
1 Chemical composition ... 4
2 Mechanical properties ... 5
3 Inspection and test ... 7
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization ?€? Part 1: Rules for the Structure and Drafting of Standardizing Documents.
This Document was formulated by reference to JIS G 3141:2017, EN 10130:2006, JFS A 2001:2014.
This Document replaced Q/BQB 408-2019 Low Carbon Cold-Rolled Steel Sheet and Strip for Cold Forming.
Compared with Q/BQB 408-2019, the major technical changes of this Document are as follows:
--- Revise the description of SPCC series designations in Tables 1, 4 and 11; --- Add the provisions of the minimum yield strength of SPCC-XM and SPCC-XL designations with thickness greater than 2.3mm in Table 8;
--- Adjust the sampling provisions for r-value inspection;
--- Revise Appendix A Comparison List of Approximate Designations of Related Standards at Home and Abroad;
--- Make editorial modifications.
Please note some contents of this Document may involve patents. The issuing agency of this Document does not assume the responsibility to identify these patents. The Appendix A of this Document is normative; Appendixes B and C are informative. This Document was proposed by Manufacturing and Management Department of the Baoshan Iron and Steel Co., Ltd.
This Document shall be under the jurisdiction of Manufacturing and Management Department of the Baoshan Iron and Steel Co., Ltd.
Drafting organization of this Document: Manufacturing and Management Department of the Baoshan Iron and Steel Co., Ltd.
Chief drafting staffs of this Document: Yuan Min, Mao Mingxi.
The historical editions replaced by this Document are as follows:
Q/BQB 408-1988, Q/BQB 408-1994, Q/BQB 408-1999, Q/BQB 408-2003, Q/BQB 408- 2009, Q/BQB 408-2014, Q/BQB 408-2018, Q/BQB 408-2019.

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