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GB/T 34200-2017

Chinese Standard: 'GB/T 34200-2017'
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Detail Information of GB/T 34200-2017; GB/T34200-2017
Description (Translated English): Cold rolled stainless steel plate�� sheet and strip for construction roof and curtain
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H46
Word Count Estimation: 10,169
Date of Issue: 2017-09-07
Date of Implementation: 2018-06-01
Administrative Organization: National Steel Standardization Technical Committee (SAC/TC 183)

GB/T 34200-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Cold rolled stainless steel plate, sheet and
strip for construction roof and curtain
建筑屋面和幕墙用冷轧不锈钢钢板和钢带
ISSUED ON. SEPTEMBER 7, 2017
IMPLEMENTED ON. JUNE 1, 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 ... 6 
4 Dimension, shape, and weight ... 7 
5 Technical requirements ... 8 
6 Test methods ... 12 
7 Inspection rules ... 12 
8 Package, marking, and quality certificate ... 13 
Annex A (Informative) Recommended regions for each designation ... 14 
Annex B (Informative) Comparison table for similar designations of this
Standard and relevant standards ... 15 
Cold rolled stainless steel plate, sheet and
strip for construction roof and curtain
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 α-
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.
5.6.2 Surface quality of steel plates, sheets and strips
5.6.2.1 The steel plates and sheets shall not have defects that will affect their
use. There may be some minor pitting of which the individual depth is less than
half of the thickness tolerance, scratches, indentations, pits, roll marks,
chromatic aberrations, and other defects that do not affect the use. Partial
grinding is allowed, but the minimum thickness of the steel plate and sheet shall
be guaranteed.
5.6.2.2 The steel strips shall not have any defects that will affect their use.
However, the delivered steel strips in coil generally do not have the opportunity
to remove defects, allowing for a small number of abnormalities. For steel strips
that are not polished, it is allowed to have minor pitting of which the individual
depth is less than half of the thickness tolerance, scratches, indentations, pits,
roll marks, chromatic aberrations, and other defects that do not affect the use.
5.6.2.3 The edge of the steel strip shall be smooth. The edge of the trimming
strip shall not have uneven cutting of which the depth is greater than half the
width tolerance and burrs of which the depth is greater than the thickness
tolerance of the steel strip. The un-trimming steel strips shall not have raw
edges that are greater than the width tolerance.
5.7 Special requirements
According to the requirements of the demander, special requirements can be
made on the chemical composition, mechanical properties, non-metallic
inclusions, corrosion resistance, etc. of steel plates, sheets and strips. The
specific content is negotiated between the supplier and the demander.
Related standard:   GB/T 34207-2017  GB/T 12754-2019
   
 
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