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Q/BQB 501-2018 English PDF (QBQB501-2018)

Q/BQB 501-2018 English PDF (QBQB501-2018)

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Q/BQB 501-2018: Dimension, shape, mass and tolerance for wire rods

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 and amp; Steel Co., Ltd.
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 and 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 and 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 and 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.

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