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Chinese Standard: 'YBT5343-2015'
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YB/T 5343-2015
ICS 77.140.65
H 49
Replacing YB/T 5343-2009
Steel wire for ropes
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative reference ... 5 
3 Classification ... 5 
4 Dimension, shape and tolerance ... 6 
5 Technical requirements... 6 
6 Inspection and test ... 16 
7 Packaging, marking and quality certificates ... 17 
Annex A (Normative) Definition of Terms for Sampling and Acceptance ... 19 
This Standard is drafted according to the rules provided in GB/T 1.1-2009.
This Standard replaces YB/T 5343-2009 "Steel Wire for Ropes"; compared with YB/T
5343-2009, the main changes are as follows.
- The standard name "Steel Wire for Ropes" is revised as "Steel Wire for Ropes".
- It is specified that this Standard is applicable to smooth and coated steel wires
with circular cross sections for all kinds of steel wire ropes (excluding steel wire
ropes for elevator).
- The classification is according to the surface state, use, nominal diameter and
nominal tensile strength of the steel wire.
- The nominal diameter range of the steel wire is expanded to 0.08mm≤d≤6.00mm
from the original 0.15mm≤d<4.4mm.
- 0.08mm≤d<0.20mm and tolerance ±0.005mm are added in the nominal diameter
column of Table 1 Diameter Tolerance; the original 0.15mm≤d<0.30mm and
0.30mm≤d<0.60mm are modified to be 0.20mm≤d<0.40mm and
0.40mm≤d<0.60mm; d<0.40mm Level A coating tolerance is deleted.
- The nominal tensile strength given by use in Table 2 is modified to be by surface
state, nominal diameter of the steel wire and use purpose (important use in Table
2, general use in Table 3). For important use smooth and Level B’s nominal
tensile strength < 4.0mm, 2160MPa is added; the nominal tensile strength of
1960MPa is increased from ≤4.4mm to <5.4mm. For the nominal tensile strength
<0.2mm of general use smooth and Level B coated steel wire. 2000MPa,
2500MPa, 3000MPa, 3500MPa are added. 1180MPa of nominal tensile strength
for general use is added. The nominal tensile strength corresponds to the
nominal diameter of the steel wire; different steel wire diameters correspond to
different nominal tensile strengths.
- For steel wires with diameter less than 0.2mm, the tolerance of the nominal
tensile strength shall be negotiated by both parties.
- The minimum number of torsion and the minimum number of repeated bending
for the expanded steel wire diameter and the increased nominal tensile strength
in Table 5 ~ Table 8 are given. The number of repeated bending of the steel wire
with diameter greater than 5.0mm shall be negotiated by both parties.
- 5.6 “Other requirements” is canceled, the contents of this clause are revised to
"Note. The number of repeated bending and the number of torsion of other
nominal tensile strengths shall be negotiated by both parties" and are included in
the corresponding Table 5 ~ Table 8.
- 5.7 "Quality of zinc coating" is revised to be "Coating quality".
- 6 "Test method" is revised to be "Inspection and test".
- 6.1 Test items, methods and sampling positions are divided into 6.1 Inspection
and 6.2 Test; the test items are divided into 3 items - diameter, ellipticity, shape;
the surface quality is included into Table 11, and the inspection methods and
quantity are given. 6.2 Test items, methods and sampling positions are included
into Table 12.
- 6.3 Sampling quantity is listed in a single row. It is stipulated that the number of
samples shall be taken according to the number of each batch of steel wires; the
sampling quantity and determination rules are given in Table 13. The calculation
method of the number of each batch of steel wires is given in Annex A.
This Standard was proposed by China Iron and Steel Industry Association.
This Standard shall be under the jurisdiction of National Steel Standardization
Technical Committee (SAC/TC183).
Drafting organizations of this Standard. Ansteel Wire Rope Co., Ltd., Guizhou Wire
Rope Incorporated Company, Hubei Fuxing Science and Technology Co., Ltd., China
Metallurgical Information and Standardization Institute.
Main drafters of this Standard. Xing Yongsheng, Zhao Xianhai, Zhang Deying, Ren
Cuiying, Wang Xiaogang, Xia Nan, Lu Ping, ......
Related standard:   YB/T 4729-2019  YB/T 4730-2019
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