GB/T 3524-2015 PDF English
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Hot-rolled carbon and low alloy structural steel strips
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| GB/T 3524-2005 | English | 279 |
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Hot-rolled carbon and low alloy structural steel strips
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| GB/T 3524-1992 | English | 199 |
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Hot-rolled cardon and low alloy structural steel strips
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GB/T 3524-2015: PDF in English (GBT 3524-2015) GB/T 3524-2015
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 3524-2005
Hot-rolled carbon and low alloy structural steel strips
ISSUED ON. SEPTEMBER 11, 2015
IMPLEMENTED ON. JUNE 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Classification and code ... 6
4 Ordering content ... 6
5 Size, shape, weight and tolerance ... 7
6 Technical requirements ... 10
7 Test methods ... 12
8 Inspection rules ... 13
9 Packaging, marks and quality certificate ... 13
10 Rounding of numerical value ... 13
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 3524-2005 Hot-rolled carbon and low alloy
structural steel strips.
Compared with GB/T 3524-2005, The main technical changes are as follows.
- Expanded the range of steel strip specifications;
- Adjusted the tolerance of steel strip thickness;
- Adjusted the tolerance of steel strip width;
- Strengthened the allowable deviation of three-points difference of steel
strip;
- Refined the allowable deviation of same-strip difference of steel strip;
- Adjusted sampling requirements for steel strip;
- Deleted two designations. Q255, Q295;
- Added three designations. Q390, Q420, Q460.
This Standard was proposed by China Iron and Steel Association.
This Standard shall be under the jurisdiction of China National Steel
Standardization Technical Committee (SAC/TC 183).
The drafting organizations of this Standard. Nanjing Iron and Steel Co., Ltd.,
Metallurgical Industry Information Standards Institute, Tangshan Rui Feng Steel
(Group) Co., Ltd..
Main drafters of this Standard. Xu Haiquan, Wang Duanjun, Ren Cuiying, Zhan
Shengling, Zhang Weixu, Dong Hongshan, Gao Yan, Li Xuesong.
This Standard replaces the following previous standards.
- GB/T 3524-1983, GB/T 3524-1992, GB/T 3524-2005.
Hot-rolled carbon and low alloy structural steel strips
1 Scope
This Standard specified the classification and code, ordering content, size,
shape, weight and tolerance, technical requirements, test methods, inspection
rules, packaging, marks and quality certification, etc. of hot-rolled carbon and
low alloy structural steel strips.
This Standard applies to hot-rolled carbon and low alloy structural steel strips
of which thickness is not greater than 12.00 mm, the width is not greater than
600 mm (hereinafter referred to as “steel strips”).
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) 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 Methods for chemical analysis of iron, steel and alloy - The
reduced molybdosilicate spectrophotometric method for the determination of
acid-soluble silicon content
GB/T 223.9 Methods for chemical analysis of iron, steel and alloy - The
chrom azurol S photometric method for the determination of aluminium
content
GB/T 223.11 Iron, Steel and Alloy - Determination of Chromium Content -
Visual Titration or Potentiometric Titration Method
GB/T 223.14 Methods for Chemical Analysis of Iron, Steel and Alloy - The
N-Benzoy-N-Phenylhydroxylamine Extraction Photometric Method for the
Determination of Vanadium Content
GB/T 223.17 Methods for chemical analysis of iron steel and alloy – The
diantipyrylmethane photometric method for the determination of titanium
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 223.37 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 223.40 Iron, Steel and Alloy - Determination of Niobium Content by
the Sulphochlorophenol S Spectrophotometric Method
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 223.63 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 Alloy - Determination of Manganese Content
- Flame Atomic Absorption Spectrometric Method
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 223.71 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Gravimetric Method after Combustion in the Pipe Furnace for the
Determination of Carbon Content
GB/T 223.72 Iron, Steel and Alloy - Determination of Sulfur Content -
Gravimetric Method
GB/T 228.1 Metallic materials - Tensile testing - Part 1 . Method of test at
room temperature
GB/T 232 Metallic materials - Bend test
GB/T 247 General rule of package mark and certification for steel plates
(sheets) and strips
GB/T 700 Carbon structural steels
GB/T 1591 High Strength Low Alloy Structural Steels
GB/T 2975 Steel and Steel Products - Location and Preparation of Test
Pieces for Mechanical Testing
GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission
Spectrometric Analysis of Carbon and Low-Alloy Steel (Routine Method)
GB/T 8170 Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 17505 Steel and Steel Products - General Technical Delivery
Requirements
GB/T 20066 Steel and Iron-Sampling and Preparation of Samples for the
Determination of Chemical Composition
3 Classification and code
3.1 Classify according to edge state
a) Trimming EC;
b) Un-trimming EM.
3.2 Classify according to thickness precision.
a) Normal thickness precision PT.A;
b) High thickness precision PT.B.
4 Ordering content
4.1 Order contract shall contain the following information.
a) Standard No.;
b) Product name;
c) Designation;
d) Specifications;
e) Edge state (EC or EM);
f) Thickness precision (PT.A or PT.B);
g) Weight;
h) Delivery status (hot-rolled, pickled or otherwise);
i) Special requirements.
4.2 If the contract does not specify the edge state, thickness precision,
delivery status, the steel strips shall be delivered as un-trimming, ordinary
thickness precision, hot-rolled state.
5 Size, shape, weight and tolerance
5.1 Steel strip thickness and tolerance
5.1.1 Steel strip thickness and tolerance shall comply with provisions in Table
1.
5.1.2 Agreed by both parties, when the buyer requires delivery according to
high thickness precision, it shall be indicated in the contract.
5.1.3 According to buyer’s requirements, it can make appropriate adjustments
to the positive and negative deviations of steel strips within the tolerance range
stipulated in Table 1.
5.1.4 According to buyer’s requirements, agreed by both parties, steel strips
of other than the specifications stipulated in Table 1 can be provided.
5.2 Steel strip width and tolerance
5.2.1 Steel strip width and tolerance shall comply with provisions in Table 2.
5.2.2 According to buyer’s requirements, it can make appropriate adjustments
to steel strip width deviation within the tolerance range.
7.5 The distance BETWEEN measuring positions for size, shape and surface
quality of steel strip AND both ends of steel strip shall ensure the accuracy of
measurement. During arbitration test, the measuring position shall be outside
the non-examination length of both ends.
8 Inspection rules
8.1 The steel strip inspection and acceptance shall be performed by the
technical quality supervision department of seller.
8.2 Steel strips shall be inspected and accepted in batch. A batch is composed
b...
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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