GB/T 34560.5-2017Structural steels -- Part 5: Technical delivery condition for atmospheric corrosion resisting steels (English PDF)

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.

4 Classification and designation representation