GB/T 3274-2017 PDF English
US$70.00 · In stock · Download in 9 secondsGB/T 3274-2017: Hot-rolled plates, sheets and strips of carbon structural steels and high strength low alloy structural steels Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 3274: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 3274-2017 | English | 70 |
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Hot-rolled plates, sheets and strips of carbon structural steels and high strength low alloy structural steels
| Valid |
| GB/T 3274-2007 | English | 70 |
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Hot-rolled plates and strips of carbon structural steels and high strength low alloy structural steels
| Obsolete |
| GB/T 3274-1988 | English | 199 |
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Carbon structural and low alloy steel rolled plates and strips
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GB/T 3274-2017: Hot-rolled plates, sheets and strips of carbon structural steels and high strength low alloy structural steels
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3274-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 70.140.50
H 46
GB/T 3724-2017
Replacing GB 912 and GB/T 3274-2007
Hot-rolled Plates, Sheets and Strips of Carbon Structural
Steels and High Strength Low Alloy Structural Steels
Issued on. FEBRUARY 28, 2017
Implemented on. NOVEMBER 1, 2017
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 Application Scope... 4
2 Normative References... 4
3 Ordering Information... 5
4 Dimensions, Shape and Weight... 5
5 Technical Requirements... 5
6 Test Methods... 7
7 Inspection Rules... 8
8 Packaging, Marking and Quality Certification... 8
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard incorporates and revises GB 912-2008, Hot-rolled Sheets and Strips of
Carbon Structural Steels and High Strength Low Alloy Structural Steels, and GB/T
3274-2007, Hot-rolled Plates and Strips of Carbon Structural Steels and High Strength
Low Alloy Structural Steels.
Compared with GB 912-2008, Hot-rolled Sheets and Strips of Carbon Structural Steels
and High Strength Low Alloy Structural Steels, and GB/T 3274-2007, Hot-rolled Plates
and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels,
the main technical changes of this Standard are as follows.
-- it changes the delivery length of steel strips with a defect into not more than 6%
of the total length of each roll of steel strip (see 5.6.4);
-- it adds intrinsic quality requirements (see 5.7); and
-- it extends inspection lot weight and changes into lot grouping by furnace (see 7.2).
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of China National Standardization
Technical Committee on Steels (SAC/TC 183).
The drafting organizations of this Standard. An Steel Co., Ltd., Chongqing Iron & Steel
(Group) Co., Ltd., Shougang Group Co., Ltd., China Metallurgical Information
Standardization Institute, HBIS Co., Ltd. Tangshan Branch, Ma Steel (Group) Holding
Co., Ltd., Fujian Sangang Group Co., Ltd. and Wuhan Iron and Steel (Group) Co., Ltd.
The main drafters of this Standard. Liu Xuyuan, Du Dasong, Pu Zhimin, Shi Li, Zhang
Weixu, Deng Cuiqing, Fang Tuoye, Liu Jianfeng, Liu Meihong, Su Haolu, Tang Zhigang,
Li Zehan and Zhao Liping.
The editions of the standard replaced by this Standard are as follows.
-- GB/T 912-1989 and GB 912-2008;
-- GB/T 3274-1988 and GB/T 3274-2007.
Hot-rolled Plates, Sheets and Strips of Carbon Structural
Steels and High Strength Low Alloy Structural Steels
1 Application Scope
This Standard specifies the order content, dimensions, shape, weight, technical
requirements, test methods, inspection rules, packaging, marking and quality
certification for hot-rolled plates, sheets and strips of carbon structural steels and high
strength low alloy structural steels.
This Standard applies to hot-rolled plates, sheets and strips of carbon structural steels
and high strength low alloy structural steels with a thickness not greater than 400 mm
(hereinafter referred to as steel plates (sheets) and 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 228.1, Metallic Materials – Tensile Testing – Part 1.Method of Test at Room
Temperature
GB/T 229, Metallic Materials – Charpy Pendulum Impact Test Method
GB/T 232, Metallic Materials – Bend test
GB/T 247, General Rules of Packaging, Marking and Certification for Steel Plates
(Sheets) and Strips
GB/T 700, Carbon Structural Steels
GB/T 709, Dimensions, Shape, Weight and Tolerances for Hot Rolled Plates,
Sheets and Strips
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 8170, Rules of Rounding off for Numerical Values and Expression and
Judgement of Limiting Values
GB/T 14977, General Requirements for Surface Condition of Hot-Rolled Steel
Plates
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 Ordering Information
3.1 The contracts or orders based on this Standard shall include the following content.
3.2 Steel plates (sheets) sheared from steel strips are normally delivered in cut edge;
if a purchase contract does not specify the edge condition, steel strips are normally
delivered in mill edge.
4 Dimensions, Shape and Weight
The dimensions, shape, weight and permissible tolerances of steel plates (sheets)
and strips shall be as specified in GB/T 709.
5 Technical Requirements
5.1 Designation and chemical composition
The designation and chemical composition of steels shall be as specified in GB/T 700
and GB/T 1591.The permissible tolerances for the chemical composition of finished
steel plates (sheets) and strips shall be as specified in GB/T 222.
5.2 Smelting method
Steels shall be smelted by oxygen converter or electric furnace.
5.3 Delivery condition
Steel plates (sheets) and strips shall be delivered in hot rolling, controlled rolling or
heat treatment.
5.4 Mechanical properties
5.4.1 The tensile strength and elongation after fracture of steel plates (sheets) and
strips with a thickness less than 3 mm shall be as specified in GB/T 700 and GB/T
1591; the elongation after fracture is allowed when it is 5% (of the absolute value)
lower than that specified in GB/T 700 and GB/T 1591.In accordance with the
requirements of the purchaser, the tensile strength of steel plates (sheets) and strips
can be as specified in GB/T 700 and GB/T 1591.
5.4.2 The mechanical and processing properties of steel plates (sheets) and strips
with a thickness not less than 3 mm shall be as specified in GB/T 700 and GB/T 1591.
5.5 Processing properties
A 180° bending test shall be carried out for steel plates (sheets) and strips; the bending
pressure head diameter of specimens shall be as specified in GB/T 700 and GB/T
1591.If the supplier is incapable of guaranteeing that the cold bending test is a pass,
it can be omitted.
5.6 Surface quality
5.6.1 No visible layering shall exist in the section of steel plates (sheets) and strips.
The surface of steel plates (sheets) and strips shall be free from scar, crack, fold,
inclusion, bubble and scale impression and other defects adverse to use.
5.7 Intrinsic quality
When the purchaser does not accept steel plates (sheets) and strips with internal
defects such as layering, it shall make the request of a nondestructive test at the time
of ordering, with the test method and conformity level as agreed by the supplier and
the purchaser.
5.8 Welding repair
The surface of steel plates has defects which can not be eliminated in accordance with
5.6.3, welding repair can be done as agreed by the supplier and the purchaser and
shall meet the following requirements.
6 Test Methods
The test items and test methods for each lot of steel plates (sheets) and strips shall be
as specified in Table 1.
7 Inspection Rules
7.1 The inspection and acceptance of steel plates (sheets) and strips shall be carried
out by the supervision department of the supplier on quality and technology.
7.2 Steel plates (sheets) and strips shall be accepted by lot; each lot is constituted
by steel plates (sheets) and strips of the same designation, furnace number, quality
grade and delivery condition. When the minimum thickness of steel plates (sheets) of
the same lot is greater than 10 mm,
7.3 The sampling quantity and sampling method for steel plates (sheets) and strips
shall be as specified in Table 1.
7.5 The inspection results of mechanical properties and chemical composition shall
be expressed with the comparison method of rounding values; the rounding rules shall
be as specified in GB/T 8170.
8 Packaging, Marking and Quality Certification
The packaging, marking and quality certification of steel plates (sheets) and strips shall
be as specified in GB/T 247.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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