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[GB/T 3531-2014] Steel plates for low temperature pressure vessels
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GB 3531-2008 | English | 399 |
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Low alloy steel plates for low temperature pressure vessels
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GB 3531-1996 | English | 359 |
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Low alloy steel plates for low temperature pressure vessels
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GB 3531-1983 | English | RFQ |
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Technical requirements for low alloy steel plates for low temperature pressure vessels
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GB 3531-2014: PDF in English GB/T 3531-2014
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB 3531-2008
Steel plates for low temperature pressure vessels
ISSUED ON. JUNE 24, 2014
IMPLEMENTED ON. APRIL 1, 2015
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 Order content ... 6
4 Expression of designation ... 7
5 Size, shape, weight and allowable deviation ... 7
6 Technical requirements ... 7
7 Test methods ... 11
8 Inspection rules ... 12
9 Packaging, marks and quality certificate ... 13
10 Rounding off of numerical value ... 13
Foreword
Sub-clauses 5.1.2, 6.4.4, 6.5.2, 8.3 of this Standard are recommendatory; the
rest are mandatory.
This Standard was drafted in accordance with the rules given in GB/T
1.1-2009.
This Standard replaces GB 3531-2008 Low alloy steel plates for low
temperature pressure vessels.
Compared with GB 3531-2008, the main technical modifications are as
follows.
- modified the standard’s name to “Steel plates for low temperature
pressure vessels”;
- added three designations. 15MnNiNbDR, 08Ni3DR and 06Ni9DR;
- tightened the control of phosphorus, sulfur (the harmful elements) in
steel;
- improved the low temperature impact absorption energy of each
designation.
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee
on Steels of Standardization Administration of China (SAC/TC 183).
Main drafting organizations of this Standard. Chongqing Iron & Steel Co., Ltd.,
Metallurgical Industry Information Standards Institute, China General
Machinery Engineering Corporation, Hunan Valin Xiangtan Iron and Steel Co.,
Ltd., Wuhan Iron and Steel (Group) Company, Nanjing Iron and Steel Co.,
Ltd.
Main drafters of this Standard. Du Dasong, Wang Shaobin, Wang Xiaohu, Qin
Xiaozhong, Ren Cuiying, Liu Jianbing, Li Shurui, Chu Juefei, Xie Chaozhong,
Li Xiaoli, Ye Guohua, Ding Qingfeng, Huo Songbo, Wang Xin, Gao Yan.
Versions of standard substituted by this Standard are.
- GB 3531-1983, GB 3531-1996, GB 3531-2008.
Steel plates for low temperature pressure vessels
1 Scope
This Standard specifies the order content, expression method of designation,
size, shape, weight and allowable deviation, technical requirements, test
methods, inspection rules, packaging, marks and quality certificate of steel
plates for low temperature pressure vessels.
This Standard is applicable to the steel plates of which the thickness is 5 mm
~ 120 mm for production of -196°C ~ < -20°C low temperature pressure
vessels.
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, Method of sampling steel for determination of chemical
composition and permissible variations for product analysis
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 223.9, 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 223.14, 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 223.19, 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 223.26, Iron, Steel and Alloy - Determination of Molybdenum Content
- The Thiocyanate Spectrophotometric Method
GB/T 223.40, Iron, Steel and Alloy - Determination of Niobium Content by
the Sulphochlorophenol S Spectrophotometric Method
GB/T 223.49, Methods for chemical analysis of iron, steel and alloy -
Extraction separation-chlorophosphonazo mA spectrophotometric method
for the determination of the total rare earth content
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 223.60, Methods for chemical analysis of iron, steel and alloy - The
perchloric acid dehydration gravimetric method for the determination of
silicon content
GB/T 223.62, 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 223.68, 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 223.76, Methods for chemical analysis of iron, steel and alloy - The
flame atomic absorption spectrometric method for the determination of
a) reference to this Standard;
b) product name;
c) designation;
d) delivery state;
e) size;
f) weight;
g) additional technical requirements (e.g. ultrasonic testing, etc.).
4 Expression of designation
The steel designation is expressed by average carbon content, alloy element
letter and "D" (the first letter of Di, meaning “low” in Chinese) and "R" (the first
letter of Rong, meaning “capacity” in Chinese) of low temperature pressure
vessel.
Example. 16MnDR.
5 Size, shape, weight and allowable deviation
5.1 The size, shape and allowable deviation of steel plate shall comply with
the provisions of GB/T 709-2006.
5.1.1 The allowable thickness deviation of steel plate shall be in accordance
with B-type requirements of GB/T 709-2006. As required by the purchaser,
indicated in the contract, the steel plate that complies with C-type deviation of
GB/T 709-2006 shall be supplied.
5.1.2 As required by the purchaser, agreed by the supplier and the
purchaser, the steel plate of stricter deviation may be supplied.
5.2 The steel sheet is delivered by theoretical weight. The thickness used
by theoretical weight is the arithmetic mean of the allowable maximum
thickness and the minimum thickness of steel plate. The 06Ni9DR density is
7.89 g/cm3. The density of other steel is 7.85 g/cm3.
6 Technical requirements
6.1 Designation and chemical composition
6.1.1 The steel designation and chemical composition (smelting
the low temperature impact absorption energy of the steel plate can be
delivered at a value higher than that of Table 2. Specific values are stated in
the contract.
6.4.5 When the supplier ensures the bending qualified, the bending test
shall be exempted.
6.5 Ultrasonic testing
6.5.1 The supplier for steel plate delivered in normalizing or normalizing
plus tempering status of which the thickness is greater than 20 mm as well as
the steel plate delivered in quenching plus tempering status of which the
thickness is greater than 16 mm shall carry out the ultrasonic testing one by
one.
6.5.2 Agreed by both parties, the steel plate of other thickness may be
subject to the ultrasonic testing one by one.
6.5.3 Ultrasonic testing standards shall be carried out according to JB/T
4730.3, GB/T 2970 or GB/T 28297. The inspection standards and the
qualification levels shall be indicated in the contract.
6.6 Surface quality
6.6.1 The surface of the steel plate does not allow the presence of cracks,
bubbles, scarring, folding and defects harmful on the use. Steel plates must
not be layered.
If there are defects mentioned above, cleaning is allowed. The cleaning depth
is calculated from the actual size of the steel plate. It shall not be greater than
half the thickness of the steel plate. And it shall ensure the minimum
thickness of the steel plate at the clean...
...... Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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