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GB/T 25820-2018 (GB/T25820-2018)

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GB/T 25820-2018: PDF in English (GBT 25820-2018)

GB/T 25820-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 25820-2010
Steel strip for packing
ISSUED ON. MAY 14, 2018
IMPLEMENTED ON. FEBRUARY 1, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Designation and classification ... 5
4 Ordering content ... 6
5 Dimensions, shapes and allowable deviations ... 7
6 Technical requirements ... 8
7 Inspection and test ... 10
8 Finished product packing ... 11
9 Marking ... 14
10 Transportation ... 14
11 Quality certification ... 15
12 Rounding off of numerical value ... 15
Annex A (Informative) Reverse bend property of strapping strips ... 16
Annex B (Normative) Definition and measuring method of the shape of
strapping strips... 17
Steel strip for packing
1 Scope
This Standard specifies the designation and classification, ordering content,
dimensions, shapes and allowable deviations, technical requirements, inspection and
test, packaging, marking, transportation and quality certification for steel strips for
packing.
This Standard applies to steel strips for the strapping use for packing for metal
materials, glass, light industrial products, logistic transportation and so on (hereinafter
referred to as strapping strips).
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to this document.
GB/T 228.1, Metallic materials – Tensile testing – Part 1. Method of test at room
temperature
GB/T 235, Metallic materials – Sheet and strip – Reverse bend test
GB/T 247, General rule of package mark and certification for steel plates (sheets)
and strips
GB/T 8170, Rules of rounding off for numerical values & expression and judgement
of limiting values
GB/T 10125, Corrosion tests in artificial atmospheres – Salt spray tests
GB/T 17505, Steel and steel products – General technical delivery requirements
3 Designation and classification
3.1 Designation
The designation of strapping strips consists of minimum tensile strength value and
Chinese Pinyin initials “KD” of “strapping strip”.
Example. 830KD.
830 – specified minimum tensile strength, in MPa;
KD – Chinese Pinyin initials of “strapping strip”.
3.2 Classification
3.2.1 They are classified into the following based on the strength.
a) ordinary strapping strips. 830KD and 880 KD;
b) high-strength strapping strips. 930KD and 980KD;
c) ultrahigh-strength strapping strips. 1150KD, 1250KD and 1350KD.
3.2.2 They are classified into the following based on the surface condition.
a) blued. referring to that the surface of finished products includes an oxidation film
and a wax protective layer.
b) painted. referring to that the surface of finished products includes paint and a
wax protective layer.
c) galvanized. referring to that the surface of finished products includes zinc (zinc
alloy) and a wax protective layer.
3.2.3 They are classified into the following based on the coiling method.
a) simplex coiling (hereinafter referred to as simplex). a coiling method in which the
coiling centre is fixed during the coiling of finished products.
b) duplex coiling (hereinafter referred to as duplex). a coiling method in which the
coiling centre reciprocates to an agreed distance along an axis.
4 Ordering content
Contracts or orders based on this Standard shall include the following content.
a) designation;
b) a reference to this Standard;
c) dimensions;
......
 
(Above excerpt was released on 2018-09-01, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT25820-2018