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GB/T 8919: Evolution and historical versions
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| GB/T 8919-1996 | English | 145 |
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Wire for steel wire ropes use
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Quality wire for steelwire ropes use
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GB/T 8919-1996: Wire for steel wire ropes use
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT8919-1996
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 49
Eqv ISO 2232:1990, ISO 6984:1990
Replacing GB 1178-74, GB 8919-88
Wire for steel wire ropes use
(eqv ISO 2232:1990, ISO 6984:1990)
[Obsolete and replaced by YB/T 5343]
ISSUED ON: APRIL 05, 1996
IMPLEMENTED ON: OCTOBER 01, 1996
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the PRC
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Reference standards ... 4
3 Classification ... 4
4 Dimensions, shape, and tolerances ... 5
5 Technical requirements ... 6
6 Test methods ... 13
7 Inspection rules ... 13
8 Packing, marking, and quality certification ... 14
Foreword
This Standard complies with the national standard "Steel wire ropes" and
replaces GB 8919-88 "Quality wire for steel wire ropes use" and GB 1178-74
"Steel wires for ropes". In terms of technical content, it is equivalent to the
international standards ISO 2232:1990 "Round drawn wire for general purpose
non-alloy steel wire ropes and for large diameter steel wire ropes -
Specifications" and ISO 6984:1990 "Round non-alloy steel wires for stranded
wire ropes for mine hoisting - Specifications". The contents of these two
international standards are incorporated into this Standard, which provide for
wire for steel wire ropes for general and important purposes.
This Standard is an amendment to the GB 8919-88 standard. It retains content
which has been proven to be suitable for national conditions in China’s long-
term practice. This Standard has been changed in the following clauses:
- 1 (Scope);
- 3 (Classification);
- 4 (Dimensions, shape, and tolerances);
- 5 (Technical requirements);
- 7.2 (Reinspection).
This Standard was first issued in February 1988.
This Standard was proposed by Ministry of Metallurgical Industry of the PRC.
This Standard shall be under the jurisdiction of China Metallurgical Information
and Standardization Institute.
Drafting organizations of this Standard: Anshan Iron and Steel Group
Corporation, China Metallurgical Information and Standardization Institute,
Tianjin No.2 Steel Wire Rope Factory.
Main drafters of this Standard: Liu Xuyuan, Feng Wenhua, Wang Ping.
Wire for steel wire ropes use
1 Scope
This Standard specifies the classification, dimensions, shape and tolerances,
technical requirements, test methods, inspection rules, packing, marking, and
quality certification of wire for steel wire ropes use.
This Standard applies to the smoothly-surfaced and zinc-coated wire with a
round cross section for the manufacture of steel wire ropes for general and
important purposes.
2 Reference standards
The following standards contain provisions which, through reference in this
Standard, constitute provisions of this Standard. At the time of publication of
this Standard, the editions shown are valid. All standards will be revised. Parties
using this Standard shall explore the possibility of using the latest editions of
the following standards.
GB 228-87 Metallic materials - Tensile testing
GB 238-84 Metallic materials - Wire - Reverse bend test
GB 239-84 Metallic materials - Wire - Torsion test
GB 2103-88 General provisions for checking, packing, marking and quality
certification of steel wire
GB/T 2973-91 Zinc-coated steel wire - Test method for weight of zinc coating
GB 2976-88 Metallic materials - Wire - Wrapping test
GB/T 4354-1994 Hot-rolled quality carbon steel wire rods
3 Classification
3.1 For classification according to surface state, nominal diameter, and nominal
tensile strength, see Table 1.
Table 1 -- Classification
3.2 For nominal diameter tolerance, as for the wires with a diameter of not more
than 0.40 mm, the nominal diameter tolerance is 0.02 mm. Wires with a
diameter greater than 0.40 mm and up to 2.00 mm have a nominal diameter
tolerance of 0.05 mm. Wires with a diameter greater than 2.00 mm have a
nominal diameter tolerance of 0.10 mm. In special cases, wires with
intermediate nominal diameter are allowed.
3.3 According to different purposes, it is classified into wire for steel wire ropes
for general purpose and for important purpose.
4 Dimensions, shape, and tolerances
4.1 Diameter
4.1.1 Nominal diameter
The nominal diameter of the wire shall comply with the provisions of 3.1 and
3.2. When the wire is accepted, the determination of each inspection result shall
be based on the nominal diameter.
4.1.2 Measured diameter and its tolerance
The measured diameter of the wire refers to the arithmetic mean of the
diameters obtained from two measurements in the directions perpendicular to
each other of the same cross section. Its tolerance shall meet the requirements
of Table 2.
Surface state of wire Nominal diameter d, mm Nominal tensile strength, MPa
Smoothly-surfaced and
class B zinc-coated wire
Class AB zinc-coated wire
Class A zinc-coated wire
Table 7 -- Mandrel diameter
5.7 Surface quality
The surface of the wire shall be smooth, bright, and clean without defects such
as cracks, knobs, burrs, scars and rust which are harmful to the use. The zinc
coating of the zinc-coated wire shall be continuous and uniform.
6 Test methods
The inspection items, test methods, sampling quantity and methods of wires
shall meet the requirements in Table 8.
Table 8 -- Test methods
No. Inspection items Test methods Sampling quantity and methods
Tensile test
Torsion test
Reverse bend test
Knotting tensile test
GB 228
GB 239
GB 238
GB 228
Wire coil: both ends of each coil
I-shaped wheel (or reel): one end of
each I-shaped wheel (or reel)
Test for weight of zinc coating
Wrapping test
GB/T 2973
GB 2976
TAKE the ends of one of every five
wire coils; TAKE one of every ten I-
shaped wheels
One end of I-shaped wheel
7 Shape and dimensions
USE a micrometer
with a division
value of 0.01 mm
to measure
Coil-by-coil (wheel-by-wheel)
measurement for wire coils (or I-
shaped wheels)
8 Surface quality Naked eye Coil-by-coil (wheel-by-wheel) check for wire coils (or I-shaped wheels)
7 Inspection rules
7.1 Inspection and acceptance
The inspection and acceptance of wires shall comply with the provisions of GB
2103.
Class of zinc-coated wire
Mandrel to wire diameter ratio
Nominal diameter of wire
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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