GB/T 710-2008 English PDF (GB/T710-2008)

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GB/T 710-2008: Hot-rolled quality carbon structural steel sheets and strips
GB/T 710-2008
GB
ICS 77.140.50
H 46
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
Replacing GB/T 710-1991
Hot-rolled Quality Carbon Structural Steel
Sheets and Strips
ISSUED ON. DECEMBER 6, 2008
IMPLEMENTED ON. OCTOBER 1, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Classification and Code ... 7 
4 Order Content ... 7 
5 Size, Shape and Permissible Deviation ... 8 
6 Technical Requirements ... 8 
7 Test Methods ... 11 
8 Inspection Rule ... 12 
9 Packaging, Marking and Inspection Certificate ... 13 
10 Rounding Off of Numerical Values ... 13 
Foreword
This Standard replaces "Hot-rolled Quality Carbon Structural Steel Sheets and Strips"
(GB/T 710-1991).
Compared with GB/T 710-1991, main changes in this Standard are as follows.
- ADD order content about hot-rolled steel sheet and strip;
- CANCEL designation of rimmed steel series;
- ADJUST tensile performance indexes;
- IMPROVE deepest drawing grade and grain size grade of deep drawing grade;
- ADJUST thickness scope indexes of cupping test;
- ADD thickness requirements of cold bending test;
- MODIFY requirements on re-inspection.
This Standard was proposed by China Iron and Steel Association.
This Standard is under the jurisdiction of the National Technical Committee on Iron and
Steel of Standardization Administration of China.
Drafting organizations of this Standard. Hunan Valin Lianyuan Steel Co., Ltd., Jigang
Group Co., Ltd., Shougang Group and Metallurgical Information and Standardization
Institute.
Main drafters of this Standard. Zhou Jian, Wu Guangliang, Gao Ling, Shi Li, Wang
Xiaohu, Li Xiaoshao and He Shuzhi.
The previous editions of the standard replaced by this Standard are as follows.
- GB/T 710-1988 and GB/T 710-1991.
Hot-rolled Quality Carbon Structural Steel Sheets and Strips
1 Scope
This Standard specifies classification, order content, size, shape, permissible deviation,
technical requirement, test method, inspection rule, packaging, marking and inspection
certificate of hot-rolled quality carbon structural steel sheets and strips.
This Standard is applicable to hot-rolled quality carbon structural steel sheets and
strips (hereinafter referred to as steel sheets and strips) with thickness less than 3mm
and width not less than 600mm.
2 Normative References
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrigendum) or revisions do not apply to this Standard, however, parties
who reach an agreement based on this Standard are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition
of the referenced document applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Diantipyrylmethane Phosphomolybdate Gravimetric Method for the Determination
of Phosphorus Content
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 Aluminium Content - Chrom
Azurol S Photometric Method
GB/T 223.11 Iron Steel and Alloy - Determination of Chromium Content - Visual
Titration or Potentiometric Titration Method
GB/T 223.12 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium
Carbonate Separation - Diphenyl Carbazide Photometric Method for the
Determination of Chromium Content
GB/T 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium
Thiosulfate Separation Iodimetric Method for the Determination of Copper Content
GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Neocuproine-chloroform Extraction Photometric Method for the Determination of
Copper Content
GB/T 223.23 Iron Steel and Alloy - Determination of Nickel Content - The
Dimethylglyoxime Spectrophotometric Method
GB/T 223.36 Methods for Chemical Analysis of Iron, Steel and Alloy - The Neutral
Titration Method for the Determination of Nitrogen Content after Distillation
Separation
GB/T 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Indophenal Blue Photometric Methods for the Determination of Nitrogen Content
after Distillation Separation
GB/T 223.53 Methods for Chemical Analysis of Iron, Steel and Alloy - The Flame
Atomic Absorption Spectrophotometric Method for the Determination of Copper
Content
GB/T 223.54 Methods for Chemical Analysis of Iron, Steel and Alloy - The Flame
Atomic Absorption Spectrophotometric Method for the Determination of Nickel
Content
GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium
Arsenite-sodium Nitrite Titrimetric Method for the Determination of Manganese
Content
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 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon
Content
GB/T 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Ammonium Phosphomolybdate Volumetric Method for the Determination of
Phosphorus Content
GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy - The Butyl
Acetate Extraction Photometric Method for the Determination of Phosphorus
Content
GB/T 223.63 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium
(Potassium) Periodate Photometric Method for the Determination of Manganese
Content
GB/T 223.64 Iron Steel and Alloyed - Determination of Manganese Content -
Flame Atomic Absorption Spectrometric Method
GB/T 223.67 Steel and Alloys - Sulfur Content Method for Determination of
Methylene Blue
GB/T 223.68 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Potassium Iodate Titration Method after Combustion in the Pipe Furnace for the
Determination of Sulfur Content
GB/T 223.69 Iron Steel and Alloy - Determination of Carbon Contents - Gas-
Volumetric Method after Combustion in the Pipe Furnace
GB/T 224 Determination of Depth of Decarburization of Steel
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (GB/T 228-
2002, eqv ISO 6892. 1998)
GB/T 232 Metallic Materials - Bend Test (GB/T 232-1999, eqv ISO 7438. 1985)
GB/T 247 General Rule of Package Mark and Certification for Steel Plates (Sheets)
and Strips
GB/T 709 Dimension Shape Weight and Tolerances for Hot-rolled Steel Plates and
Sheets
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for
Mechanical Testing (GB/T 2975-1998, eqv ISO 377. 1997)
GB/T 4156 Metallic Materials - Sheet and Strip - Erichsen Cupping Test (GB/T
4156-2007, ISO 20482. 2003, IDT)
GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission
Spectrometric Analysis of Carbon and Low-alloy Steel (Routine Method)
GB/T 6394 Metal-methods for Estimating the Average Grain Size
GB/T 13299 Steel - Determination of Microstructure
GB...