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GB/T 34560.5-2017: Structural steels -- Part 5: Technical delivery condition for atmospheric corrosion resisting steels Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 34560.5-2017: Structural steels -- Part 5: Technical delivery condition for atmospheric corrosion resisting 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/GBT34560.5-2017 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 ContentsForeword ... 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 ... 29ForewordGB/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 steels1 ScopeThis 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 referencesThe 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 definitionsThe 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 representation4.1 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; ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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