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Q/BQB 501-2018 PDF in English


Q/BQB 501-2018 (Q/BQB501-2018, QBQB 501-2018, QBQB501-2018)
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Q/BQB 501-2018: PDF in English (QBQB 501-2018)

Q/BQB 501-2018
BQB
ENTERPRISE STANDARD OF BAOSTEEL
Replacing Q/BQB 501-2014
Dimension, Shape, Mass
and Tolerance for Wire Rods
ISSUED ON. JANUARY 15, 2018
IMPLEMENTED ON. APRIL 01, 2018
Issued by. Baoshan Iron & Steel Co., Ltd.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Classification and Code ... 4
4 Dimension, Shape and Tolerance ... 4
5 Mass ... 5
6 Coil Dimension ... 5
7 Inspection Position ... 7
8 Rules of Rounding off for Numerical Values... 7
Dimension, Shape, Mass
and Tolerance for Wire Rods
1 Scope
This Standard specifies the dimension, shape, mass and tolerance for wire rods.
This Standard is applicable to the various steel wire rods with diameter of 5mm~28mm
manufactured by Baoshan Iron & Steel Co., Ltd.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 8170-2008 Rules of Rounding off for Numerical Values & Expression and
Judgement of Limiting Values
3 Classification and Code
Ordinary precision Class-A
Relative-high precision Class-B
High precision Class-C
4 Dimension, Shape and Tolerance
4.1 The nominal diameter and cross-sectional area of the wire rod shall conform to the
provisions of Table 1.
4.2 The diameter tolerance and out-of-roundness of the wire rod shall conform to the
provisions of the corresponding precision levels specified in Table 1. The out-of-
roundness indicates the difference between the maximum diameter and minimum
diameters on the same cross-section of the wire rod.
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.