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GB/T 34560.5-2017 (GBT34560.5-2017)

GB/T 34560.5-2017_English: PDF (GBT 34560.5-2017, GBT34560.5-2017)
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GB/T 34560.5-2017English180 Add to Cart 0--9 seconds. Auto-delivery Structural steels -- Part 5: Technical delivery condition for atmospheric corrosion resisting steels Valid GB/T 34560.5-2017

BASIC DATA
Standard ID GB/T 34560.5-2017 (GB/T34560.5-2017)
Description (Translated English) Structural steels -- Part 5: Technical delivery condition for atmospheric corrosion resisting steels
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H40
Classification of International Standard 77.140.01
Word Count Estimation 22,296
Date of Issue 2017-10-14
Date of Implementation 2018-07-01
Drafting Organization Anshan Iron and Steel Co., Ltd., Shougang Corporation, Metallurgical Industry Information Standards Institute, Jiangyin Xingcheng Special Steel Co., Ltd., China Metallurgical Construction Research Institute Co., Ltd., Shandong Electrician Electric Group Co., Ltd., CITIC Metal Co., Ltd.
Administrative Organization National Steel Standardization Technical Committee (SAC/TC 183)
Proposing organization China Iron and Steel Association
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of PRC; China National Standardization Administration

Standards related to: GB/T 34560.5-2017

GB/T 34560.5-2017
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.01
H 40
Structural steels - Part 5: Technical delivery
condition for atmospheric corrosion resisting steels
(ISO 630-5:2014, MOD)
ISSUED ON: OCTOBER 14, 2017
IMPLEMENTED ON: JULY 01, 2018
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the PRC;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 4 
1 Scope ... 6 
2 Normative references ... 6 
3 Terms and definitions ... 9 
4 Classification and designation representation ... 9 
5 Order content ... 10 
6 Dimensions and tolerances on dimensions, shape, and mass ... 10 
7 Technical requirements ... 10 
8 Test methods ... 14 
9 Inspection rules ... 15 
10 Packaging, marking, and certification ... 16 
Annex A (Informative) Structural changes in this Part compared to ISO 630-
5:2014 ... 17 
Annex B (Informative) Technical differences between this Part and ISO 630-
5:2014 and their causes ... 18 
Annex C (Normative) Relevant provisions of Q235NH~Q550NH ... 20 
Annex D (Informative) Notes on weldability ... 25 
Annex E (Informative) Additional information for the use of steel with improved
atmospheric corrosion resistance ... 26 
Annex F (Informative) Guide to assessing the atmospheric corrosion resistance
of low alloy steels ... 27 
Annex G (Informative) Comparison table of the designation of this Part with the
designation of foreign standards of the same kind ... 29 
Foreword
GB/T 34560 “Structural steels” is divided into 6 parts:
- Part 1: General technical delivery condition for hot-rolled products;
- Part 2: Technical delivery conditions for structural steels for general
purposes;
- Part 3: Technical delivery conditions for fine grain structural steels;
- Part 4: Technical delivery conditions for high yield strength quenched and
tempered structural steel plates;
- Part 5: Technical delivery condition for atmospheric corrosion resisting
steels;
- Part 6: Technical delivery conditions for seismic-improved structural steels
for building.
This Part is Part 5 of GB/T 34560.
This Part is drafted in accordance with the rules given in GB/T 1.1-2009.
This Part uses redraft law to modify and adopt ISO 630-5:2014 “Structural
steels - Part 5: Technical delivery conditions for structural steels with improved
atmospheric corrosion resistance”.
This Part, compared with ISO 630-5:2014, has structural adjustments. Annex A
lists a comparison table of clause-subclause number of this Part and ISO 630-
5:2014.
This Part, compared with ISO 630-5:2014, has technical differences. The
clauses involved in these differences have been marked by a vertical single line
(|) at the blank of the outer margin. Annex B gives a table of the corresponding
technical differences and their causes.
This Part also makes the following editorial changes:
- Delete Bibliography of ISO 630-5:2014;
- ADD informative Annex F;
- ADD informative Annex G.
This Part was proposed by China Iron and Steel Association.
Structural steels - Part 5: Technical delivery condition
for atmospheric corrosion resisting steels
1 Scope
This Part of GB/T 34560 specifies the terms and definitions, classification and
designation representation, order content, dimensions and tolerances on
dimensions, shape, and mass, technical requirements, test methods, inspection
rules, packaging, marking, and certification of atmospheric corrosion resisting
structural steels.
This Part applies to steel plates and strips, wide flats, section steels, and bars
(hereinafter referred to as “steels”) with nominal thickness or diameter not
exceeding 200 mm for welding or bolting.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel
Products
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total
silicon content - Reduced molybdosilicate spectrophotometric method (GB/T
223.5-2008, ISO 4829-1:1986, ISO 4829-2:1988, MOD)
GB/T 223.9 Iron steel and alloy - Determination of aluminium content -
Chrome 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 223.16 Methods for chemical analysis of iron, steel and alloy - The
chromotropic acid 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 223.25 Methods for chemical analysis of iron, steel and alloy - The
dimethylglyoxime gravimetric method for the determination of nickel content
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 223.62 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 223.72 Iron, Steel and Alloy - Determination of Sulfur Content -
Gravimetric Method
GB/T 223.78 Methods for Chemical Analysis of Iron, Steel and Alloy -
Curcumin Spectrophotometric Method for the Determination of Boron
Content (GB/T 223.78-2000, idt ISO 10153:1997)
GB/T 223.79 Iron and steel - Determination of multi-element contents - X-ray
fluorescence spectrometry (Routine method)
GB/T 223.81 Iron steel and alloy - Determination of total aluminum and total
boron contents - Microwave digestion-inductively coupled plasma mass
spectrometric method
GB/T 223.84 Steel and iron - Determination of titanium content -
Diantipyrylmethane spectrophotometric method (GB/T 223.84-2009, ISO
10280:1991, IDT)
GB/T 223.85 Steel and iron - Determination of sulfur content - Infrared
absorption method after combustion in an induction furnace (GB/T 223.85-
2009, ISO 4935:1989, IDT)
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at
room temperature (GB/T 228.1-2010, ISO 6892-1:2009, MOD)
GB/T 229 Metallic materials - Charpy pendulum impact test method (GB/T
229-2007, ISO 148-1:2006, MOD)
GB/T 247 General rule of package, mark and certification for steel plates
(sheets) and strips
GB/T 2101 General requirement of acceptance packaging marking and
certification for section steel
GB/T 2975 Steel and Steel Products - Location and Preparation of Test
Pieces for Mechanical Testing (GB/T 2975-1998, eqv ISO 377:1997)
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element
contents - Spark discharge atomic emission spectrometric method (routine
method)
GB/T 5313 Steel plate with through-thickness characteristics
GB/T 10561-2005 Steel - Determination of content of nonmetallic inclusions
- Micrographic method using standards diagrams (GB/T 10561-2005, ISO
4967:1998, IDT)
GB/T 20066 Steel and iron - Sampling and preparation of samples for the
determination of chemical composition (GB/T 20066-2006, ISO 14284:1996,
IDT)
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content
- Infrared absorption method after combustion in an induction furnace
(routine method) (GB/T 20123-2006, ISO 15350:2000, IDT)
GB/T 20124 Steel and iron - Determination of nitrogen content - Thermal
conductimetric method after fusion in a current of inert gas (GB/T 20124-
2006, ISO 15351:1999, IDT)
GB/T 20125 Low-alloy steel - Determination of multi-element contents -
Inductively coupled plasma atomic emission spectrometric method
GB/T 34560.1 Structural steels - Part 1: General technical delivery condition
for hot-rolled products (GB/T 34560.1-2017, ISO 630:2011, MOD)
3 Terms and definitions
The terms and definitions defined in GB/T 34560.1 and the following apply to
this document.
3.1 Atmospheric corrosion resisting steel
Steel in which a certain number of alloying elements, such as P, Cr, Ni, Cu, etc.,
have intentionally been added in order to increase its resistance to atmospheric
corrosion, by forming an auto-protective oxide layer on the base metal.
Note: These steels are commonly known as “weathering steels”.
4 Classification and designation representation
4.1 Classification
According to the phosphorus content of steel, the steel of this Part is divided
into two classes:
a) Class W: It indicates atmospheric corrosion resisting structural steel;
b) Class WP: It indicates atmospheric corrosion resisting structural steel with
a high P content.
4.2 Designation representation
The steel designation consists of five parts: Chinese pinyin “Q” of “yield
strength”, specified minimum upper yield strength value, code for “atmospheric
corrosion resisting steel” (English first letter “W” or “WP”), delivery state (N or
+N), quality grade (C, D).
Example: Q355WPNC
Where:
Q - The first letter of Chinese pinyin “Qu” for the yield strength of steel;
...