GB/T 34200-2017Cold rolled stainless steel plate, sheet and strip for construction roof and curtain (English PDF)

1 Scope

This Standard specifies the ordering content, dimension, shape, weight, technical requirements, test methods, inspection rules, package, marking, and quality certificate of cold rolled stainless steel plate, sheet and strip for construction roof and curtain.

This Standard is applicable to the wide cold-rolled steel strip for construction roof and curtain with a thickness of 0.3mm to 4.0mm (hereinafter referred to as wide steel strip) as well as its coil slitting cut-to-size steel plate and sheet (hereinafter referred to as coil slitting steel plate and sheet), and wide cold- rolled steel strip with longitudinal shear (hereinafter referred to as wide steel strip with longitudinal shear).

2 Normative references

The following documents are essential to the application of this document. For dated references, only the editions with the dates indicated are applicable to this document. For undated references, only the latest editions (including all the amendments) are applicable to this document.

GB/T 222 Permissible tolerances for chemical composition of steel products

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 223.5 Steel and iron -- Determination of acid-soluble silicon and total silicon content -- Reduced molybdosilicate spectrophotometric method

GB/T 223.11 Iron, steel and alloy -- Determination of chromium content --

Visual titration or potentiometric titration method

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 223.18 Methods for chemical analysis of iron, steel and alloy -- The sodium thiosulfate separation iodimetric method for the determination of copper content

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 223.28 Methods for chemical analysis of iron, steel and alloy -- The alpha- benzoin oxime gravimetric method for the determination of molybdenum content

GB/T 223.36 Methods for chemical analysis of iron, steel and alloy -- The neutral titration method for the determination of nitrogen content after distillation separation

GB/T 223.40 Iron, steel and alloy -- Determination of niobium content by the sulphochlorophenol S spectrophotometric method

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 223.58 Methods for chemical analysis of iron, steel and alloy -- The sodium arsenite-sodium nitrite titrimetric 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 228.1-2010 Metallic materials -- Tensile testing -- Part 1. Method of test at room temperature

GB/T 230.1 Metallic materials -- Rockwell hardness test -- Part 1. Test method (scales A, B, C, D, E, F, G, H, K, N, T)

GB/T 231.1 Metallic materials -- Brinell hardness test -- Part 1. Test method

GB/T 232 Metallic materials -- Bend test

GB/T 247 General rule of package mark and certification for steel plates (sheets) and strips

4# surface

General-purpose polishing on one or both sides

Discontinuous linear texture, and reflective

USE 150# to 320# abrasive belt for grinding and leveling

HL surface Cold rolling, pickling, leveling, and grinding

Continuous abrasion pattern

USE 150# to 320# abrasive belt for polishing and leveling, so that the surface shows continuous abrasion pattern.

BA surface Cold rolling, and bright annealing

Smooth, bright, and reflective

Bright annealing is performed in a controlled atmosphere furnace after cold rolling. Dry hydrogen or a mixture of dry hydrogen and dry nitrogen is generally used to prevent oxidation during annealing.

It is also a commonly used surface processing for post-process reprocessing.

8 Package, marking, and quality certificate

The package, marking, transportation, storage, and quality certificate of steel plates, sheets and strips shall comply with the provisions of GB/T 247.

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