GB/T 16270-2009 PDF English
US$70.00 · In stock · Download in 9 secondsGB/T 16270-2009: High strength structural steel plates in the quenched and tempered condition 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 16270: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 16270-2009 | English | 70 |
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High strength structural steel plates in the quenched and tempered condition
| Valid |
| GB/T 16270-1996 | English | 359 |
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3 days
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High-strength structural steel plates and strips: products supplied in the heat-treated or controlled rolled condition
| Obsolete |
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GB/T 16270-2009: High strength structural steel plates in the quenched and tempered condition---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/GBT16270-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 16270-1996
High strength structural steel plates in the
quenched and tempered condition
Issued on. JUNE 25, 2009
Implemented on. APRIL 1, 2010
Jointly Issued by. General Administration of Quality Supervision, Inspection and
Quarantine (AQSIQ);
Standardization Administration (SAC) of the People’s Republic
of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Denomination methods of designation... 8
4 Information required when ordering... 8
5.Size, shape, weight and allowable deviation... 8
6 Technical Requirements... 9
7 Test Methods... 12
8 Inspection Rules... 13
9 Packaging, mark and quality certificate... 13
10 Rounding off of numerical values... 14
11 Approximate contrast of domestic-foreign designations... 14
Appendix A... 15
This Standard specifies designations, dimension, shape, weight, and allowable
deviation, technical requirements, test method, inspection rules, packaging, marks
and quality certificate of high strength structural steel plates in quenched and
tempered condition.
This Standard is applicable to high strength structural steel plate whose thickness
shall not exceed 150mm and delivery state is slack quenching (quench plus
tempering).
2 Normative References
The following standards contain provisions which, through reference in this text,
constitute provisions of this national standard. For dated reference, subsequent
amendments (excluding corrigendum) or revisions of these publications do not apply.
However, the parties who enter into agreement according to these specifications are
encouraged to study whether the latest editions of these references are applicable.
For undated references, the latest edition of the normative document is applicable to
this Standard.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.5 Methods for chemical analysis of steel and alloy - The reduced
molybdosilicate spectro-photometric method for the determination of acid-soluble
silicon content
GB/T 223.9 Iron steel and alloy - Determination of aluminium content - Chrom
azurol S photometric method
GB/T 223.11 Methods for chemical analysis of iron, steel and alloy - The
ammonium persulfate oxidation volumetric method for the determination of
chromium content
3 Denomination methods of designation
Designation of steel is consisted of 3 parts - the first letter of Chinese pinyin that
represents yield strength, the minimum yield strength numerical value, and the quality
grade sign (C, D, E, F), according to sequential arrangement.
4 Information required when ordering
The customer shall provide the following information when ordering.
5.Size, shape, weight and allowable deviation
5.1 Dimension, shape, weight and allowable deviation of steel plate shall comply with
the specifications of GB/T709.
6 Technical Requirements
6.1 Designation and chemical composition
6.1.1 Steel designation, chemical composition (smelting analysis) and
carbon-equivalent value CEV shall comply with the specifications of Table 1.
6.2 Smelting process
By oxygen converter or electro-smelting.
6.3 Delivery state
Delivery of steel plate shall follow the state of slack quenching (quench + tempering).
6.4 Mechanical Properties and Processing Properties
6.4.1 The mechanical properties of steel plate and processing property shall meet the
requirements of Table 2.
6.4.3 If the steel plate’s thickness is less than 12mm, auxiliary specimen shall be
adopted for Charpy pendulum impact test of steel plate. If the thickness >8mm ~
< 12mm, auxiliary specimen size of steel plate shall be 10mm * 7.5mm * 55mm; the
test result shall not be less than 75% of the specified value.
6.5 Surface Quality
6.5.1 Flaw, bubble, scab, fold and inclusion etc. shall not be allowed for the steel plate
surface. Lamination shall not be allowed for steel plate. If there are aforesaid defects,
clearing is allowed.
6.6 Special Requirements
6.6.1 Through negotiation between buyer and seller, and indicating in the contract,
ultrasonic testing can be carried out for steel plate sheet-by-sheet; test method shall
conform to specification of GB/T 2970; testing standard and acceptance grade shall
be indicated in the contract.
6.6.2 Through negotiation between both buyer, and seller and indicating in the
contract, other special requirements can be put forward to the steel plate.
7 Test Methods
7.1 The inspection items, sample quantity, sampling methods and test methods of
steel plates from every batch shall conform to the provisions of Table 3.
7.2 Visual inspection shall be applied to steel plate’s appearance.
8 Inspection Rules
The inspection and acceptance of steel plate shall be responsible by the seller's
technical quality supervision department; the buyer is entitled to check and inspect
any of the inspection items as specified in this Standard or contract.
8.3 If the result of Charpy pendulum impulse testing does not meet the specification,
three specimens shall be retaken as one group from the same batch's steel plate to be
tested.
8.4 Re-inspection and determination of steel plate shall meet the specification of GB/T
17505.
9 Packaging, mark and quality certificate
The packaging, mark and quality certificate of steel plates shall conform to the
provisions of GB/T 247.
10 Rounding off of numerical values
Rounding off of numerical values shall meet the specification of YB/T 081.
11 Approximate contrast of domestic‐foreign designations
Approximate contrast among designations of this Standard, previous standard, foreign
or international standards is shown in Appendix A.
Appendix A
(Informative Appendix)
Approximate contrast of domestic-foreign designations
Approximate contrast among designations of this Standard, previous standard, foreign
or international standards is shown in Table A.1.
Table A.1
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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