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GB/T 38347-2019 (GB/T38347-2019)

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GB/T 38347-2019English150 Add to Cart 0-9 seconds. Auto-delivery. Hot-rolled wire rod of ultra-low carbon steel with high boron Valid


GB/T 38347-2019: PDF in English (GBT 38347-2019)

GB/T 38347-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 49
Hot-rolled Wire Rod of Ultra-low Carbon Steel with
High Boron
ISSUED ON: DECEMBER 10, 2019
IMPLEMENTED ON: JULY 1, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Designation Representation Method ... 6 
4 Order Content ... 6 
5 Dimensions, Appearances, Weights and Allowable Deviations ... 7 
6 Technical Requirements ... 7 
7 Test Methods ... 9 
8 Inspection Rules ... 10 
9 Packaging, Marking and Quality Certificate ... 11 
Appendix A (informative) Purposes of Different Designations of Ultra-low
Carbon Steel with High Boron ... 12 
Hot-rolled Wire Rod of Ultra-low Carbon Steel with
High Boron
1 Scope
This Standard stipulates the designation representation method, order content,
dimensions, appearances, weights, allowable deviations, technical requirements, test
methods, inspection rules, packaging, marking and quality certificate of hot-rolled wire
rod of ultra-low carbon steel with high boron.
This Standard is applicable to hot-rolled wire rod of ultra-low carbon steel with high
boron with the diameter of 3 mm ~ 60 mm (hereinafter referred to as wire rod).
2 Normative References
The following documents are indispensable to the application of this document. In
terms of references with a specified date, only versions with a specified date are
applicable to this document. In terms of references without a specified date, the latest
version (including all the modifications) is applicable to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.4 Alloyed Steel - Determination of Manganese Content - Potentiometric or
Visual Titration Method
GB/T 223.5 Steel and Iron - Determination of Acid-soluble Silicon and Total Silicon
Content - Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.9 Iron Steel and Alloy - Determination of Aluminum Content - Chrome Azurol
S Photometric Method
GB/T 223.11 Iron, Steel and Alloy - Determination of Chromium Content - Visual
Titration or Potentiometric Titration Method
GB/T 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy - The Indophenol
Blue Photometric Method for the Determination of Nitrogen Content after Distillation
Separation
GB/T 223.59 Iron, Steel and Alloy - Determination of Phosphorus Content - Bismuth
Phosphomolybdate Blue Spectrophotometric Method and Antimony
Phosphomolybdate Blue Spectrophotometric Method
GB/T 223.63 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium
(potassium) Periodate Photometric Method for the Determination of Manganese
Conductimetric Method after Fusion in a Current of Inert Gas
GB/T 20125 Low-alloy Steel - Determination of Multi-element Contents - Inductively
Coupled Plasma Atomic Emission Spectrometric Method
GB/T 20126 Unalloyed Steel - Determination of Low Carbon Content - Part 2: Infrared
Absorption Method after Combustion in an Induction Furnace (with preheating)
GB/T 22368 Low-alloy Steel - Determination of Multi-element Contents - Glow
Discharge Optical Emission Spectrometry (routine method)
YB/T 081 Rule for Rounding Off of Numerical Values and Judgement of Testing Values
for Technical Standards of Metallurgy
3 Designation Representation Method
The designations of wire rod are: CH1B, CH3B, CH5B, BP05, BP05D. See the specific
meaning below:
CH1B:
---C represents “carbon”;
---H represents the initials of “high”;
---B represents “boron”;
---1 represents one in ten thousand of carbon content.
BP05D:
---BP represents the initials of “blasting”;
---05 represents five in ten thousand of carbon content;
---D represents the initials of “electric”.
Please refer to Appendix A for the purposes of each designation of steel.
4 Order Content
Order content, which shall be explicitly indicated in the contract, includes:
a) Serial No. of this Standard;
b) Product name;
......
 
(Above excerpt was released on 2020-01-20, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT38347-2019