GB/T 33814-2017 PDF English
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GB/T 33814-2017: Welded H-section steel---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/GBT33814-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.70
H 44
Welded H-section steel
Issued on. MAY 31, 2017
Implemented on. FEBRUARY 01, 2018
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 Ordering content... 5
4 Code and specification representation method... 6
5 Dimension, shape, weight and permissible deviation... 6
6 Technical requirements and production... 12
7 Inspection rules... 14
8 Packaging, marking and quality certificate... 19
Annex A (informative) Cross-sectional dimension, cross-sectional area,
theoretical weight and cross-sectional characteristic parameters of welded H-
section steel... 21
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by China Iron and Steel Association.
This Standard shall be under the jurisdiction of National Technical Committee
on Steel of Standardization Administration of China (SAC/TC 183).
Drafting organizations of this Standard. MCC Construction Research Institute
Co., Ltd., Anhui Ma Steel Engineering Technology Group Steel Structure
Branch, Hebei Jinxi Iron and Steel Group Co., Ltd., China Metallurgical
Information and Standardization Institute.
Main drafters of this Standard. Ma Dezhi, Liu Jingfeng, Peng Yongli, Wang Yujie,
Zhao Yichen, Duan Bin, Zheng Shiqiang, Chen Jie, Liu Baoshi, Zhou Yunfang,
Liu Chun.
Welded H-section steel
1 Scope
This Standard specifies the ordering content, code and specification
representation method, dimension, shape, weight and permissible deviation,
technical requirements and production, inspection rules, packaging, marking
and quality certificate of welded H-section steel.
This Standard applies to the selection, fabrication and acceptance of welded
H-section steel.
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 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 699 Quality carbon structure steels
GB/T 700 Carbon structural steels
GB/T 712 Ship and ocean engineering structural steel
GB/T 714 Structural steel for bridge
GB/T 1591 High strength low alloy structural steels
3 Ordering content
Contracts ordered according to this Standard shall contain the following
technical contents.
4 Code and specification representation method
4.1 Code
The code of welded H-section steel is WH, where “W” represents welded and
“H” represents H-section steel.
4.2 Specification representation
The specification of welded H-section steel shall be expressed in the following
form.
5 Dimension, shape, weight and permissible deviation
5.1 Dimension and representation method
5.3 Weight and permissible deviation
Welded H-section steel shall be delivered according to the theoretical weight
(the theoretical weight shall be calculated regarding the density as 7.85 g/cm3).
Agreed upon between he supply and demand parties and specified in the
contract, it may delivery according to the actual weight.
6 Technical requirements and production
6.1 Steel
6.1.1 Steel used for welded H-section steel shall comply with the specifications
of relevant standards such as GB/T 699, GB/T 700, GB/T 712, GB/T 714, GB/T
1591, GB/T 3274, GB/T 4171, GB/T 19879.
6.2 Welding materials
6.2.1 The welding material used for welded H-section steel shall comply with
the specifications of relevant standards such as GB/T 2537, GB/T 4282, GB/T
5117, GB/T 5118, GB/T 5293, GB/T 8110, GB/T 10045, GB/T 12470, GB/T
17493.
6.3 Welding
6.3.1 When the thickness of the web of welded H-section steel is not greater
than 20 mm, the web and the flange plate may be connected by fillet welds.
The weld foot size hf shall meet the design requirements.
6.3.2 When the thickness of the web of welded H-section steel is greater than
20 mm, the web and flange plate should be connected by partially or fully
welded butt joint and fillet joint combined welds. The weld quality grade shall
be determined in accordance with the relevant specifications of GB 50661-2011.
6.3.6 Welding H-section steel can adopt welding methods such as submerged
arc automatic welding (boat welding or flat fillet welding), solid welding wire or
flux cored wire gas shielded welding, electrode arc welding, flux cored wire self-
protective welding and their combinations. The welding method and the welding
process shall meet the requirements of relevant standards.
6.4 Welding personnel
6.4.1 Welders engaged in the manufacture of welded H-section steel shall take
technical qualification examinations according to the requirements of steel type,
welding joint form, welding method, welding position, etc., and obtain the
corresponding certificate of conformity. The certified welder shall weld within
the recognize range of the certificate of conformity.
7 Inspection rules
7.1 Inspection and acceptance
7.1.1 The Inspection and acceptance of welded H-section steel finished
products shall be organized by the quality supervision department of the
production organization.
7.2 Batching rules
The inspection batch of welded H-section steel shall be determined according
to product specification, raw material and welding process. The same batch of
welded H-section steel shall have the same specification, using steel and
welding materials of the same grade (model), quality grade, delivery conditions,
and using the same processing and welding process; each batch is not more
than 300 t.
7.3 Sampling rules
7.3.1 The sampling method for the chemical composition inspection of welded
H-section steel shall be in accordance with the relevant specifications of GB/T
20066.The sampling part and sampling method of the mechanical property test
shall be in accordance with the relevant specifications of GB/T 2975.
7.3.3 The dimensions, shape and surface quality of welded H-section steel shall
be checked one by one.
7.4 Finished product inspection
The inspection items, sampling quantity and test methods of welded H-section
steel shall comply with the specifications of Table 4.
7.5 Welding inspection
7.5.1 Appearance inspection
7.5.1.1 All welds shall be cooled to ambient temperature for visual inspection.
7.5.1.4 The content and requirements of weld appearance dimension
inspection shall comply with the specifications of Table 2 and Table 3.
7.5.2 Non-destructive testing
7.5.2.1 The non-destructive testing shall be carried out after passing the
appearance inspection. Specifically, it shall comply with the relevant
specifications of GB 50661-2011.
7.5.2.5 Radiation test method may be used to supplement the test as needed.
7.5.2.6 Radiation testing shall comply with the relevant specifications of GB/T
3323-2005.The quality grade of radiography shall comply with the
requirements of Grade B. The qualification grade of Grade I welds shall be
Grade II and above, and the qualification grade of Grade II welds shall be Grade
III and above.
7.5.2.10 Penetration testing shall comply with the relevant specifications of
JB/T 6062.The conformity criterion shall comply with the relevant specifications
of the appearance inspection in Table 5.
7.6 Testing agencies and personnel
7.6.1 The third-party testing agency engaged in inspection shall pass the
national laboratory accreditation or measurement certification and shall have
the qualification for testing the corresponding items.
7.7.2 The results of sampling inspection of welds shall be judged according to
the following specifications.
8 Packaging, marking and quality certificate
8.1 Welded H-section steel shall be marked with the name or registered
trademark of the manufacturer by means of stamping, spraying or affixing. The
marking shall be clear and the marking location shall be at the end of the web.
8.2 Welded H-section steel finished products shall be marked with the factory-
exit number, the grade of the steel used and the inspector's symbol or steel
letter for examination.
8.3 Each batch of welded H-section steel shall be accompanied by a quality
certificate issued by the supply party, which states.
8.4 In addition to the above specifications, the packaging, marking and quality
certificate of welded H-section steel shall also comply with the relevant
specifications of GB/T 2101.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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