Q/BQB 495-2021 English PDF (QBQB495-2021)

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Q/BQB 495-2021: Cold-rolled steel strip for welded pipe use
Q/BQB 495-2021
BQB
ENTERPRISE STANDARD OF
BAOSHAN IRON AND STEEL CO., LTD
Replacing Q/BQB 495-2018
Cold-Rolled Steel Strip for Battery Shell Use
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 ... 4
3 Inspection and test ... 4
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 replaced Q/BQB 495-2018 Cold-Rolled Steel Strip for Battery Shell
Use.
Compared with Q/BQB 495-2018, this Document has the major technical changes as
follows:
--- Adjust the upper limit requirement of pitted surface roughness from 1.0μm to
1.1μm;
--- 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.
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.
The historical editions replaced by this Document are as follows:
Q/BQB 495-2004, Q/BQB 495-2008, Q/BQB 495-2014, Q/BQB 495-2016, Q/BQB 495-
2018.