Galvanized Steel Wire Strand (GSW) ASTM A475 / BS 183
Galvanized Steel Wire Strand Manufacturer for Overhead Power Lines and Utility Applications
Galvanized Steel Wire Strand (GSW) is a high-strength steel strand widely used as a mechanical support component in overhead transmission and distribution systems. Manufactured according to ASTM A475 and BS 183, GSW provides excellent tensile strength, corrosion resistance, and long-term durability for applications requiring reliable mechanical support.
Zhongdong Cable supplies Galvanized Steel Wire Strand (GSW) with different grades, strand constructions, and coating classes to meet requirements from utility companies, EPC contractors, and infrastructure projects worldwide.
Product Overview
Galvanized Steel Wire Strand is produced by twisting multiple galvanized steel wires together to form a strong and flexible supporting strand.
It is commonly used as:
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Messenger wire for aerial bundled cable (ABC)
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Supporting wire for overhead distribution lines
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Guy wire for utility poles and towers
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Earth wire / grounding support conductor
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Mechanical reinforcement for communication and power networks
Standards
- IEC 61089
- ASTM A 475
- BS 183
- AS 1222.1
- GB/T 1179
Construction
Typical Structure
Galvanized Steel Wire Strand (GSW) consists of:
| Component |
Description |
| Material |
High carbon steel wire |
| Surface Treatment |
Hot-dip galvanized zinc coating |
| Construction |
3 wires / 7 wires / 19 wires |
| Lay Direction |
Right-hand lay (standard) |
| Surface |
Smooth galvanized finish |
Common constructions:
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3-wire strand
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7-wire strand
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19-wire strand
Technical Specifications
|
Code number
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Section
Area
|
Number of wires
|
Diameter Wire
|
Diameter Conductor
|
Linear mass
|
Rated strength
|
DC resistance
|
|
mm
|
mm
|
kg/km
|
kN
|
W/km
|
|
mm2
|
|
|
|
|
|
|
4
|
27.1
|
7
|
2.22
|
6.66
|
213.3
|
39.3
|
7.1445
|
|
6.3
|
42.7
|
7
|
2.79
|
8.36
|
335.9
|
60.2
|
4.5362
|
|
10
|
67.8
|
7
|
3.51
|
10.53
|
533.2
|
93.5
|
2.8578
|
|
12.5
|
84.7
|
7
|
3.93
|
11.78
|
666.5
|
116.9
|
2.2862
|
|
16
|
108.4
|
7
|
4.44
|
13.32
|
853.1
|
199.7
|
1.7861
|
|
16
|
108.4
|
19
|
2.70
|
13.48
|
857.0
|
152.9
|
1.7944
|
|
25
|
169.4
|
19
|
3.37
|
16.85
|
1339.1
|
238.9
|
1.1484
|
|
40
|
271.1
|
19
|
4.26
|
21.31
|
2142.6
|
374.1
|
0.7177
|
|
40
|
271.1
|
37
|
3.05
|
21.38
|
2148.1
|
382.3
|
0.7196
|
|
63
|
427.0
|
37
|
3.83
|
26.83
|
3383.2
|
589.3
|
0.4569
|
Key Features and Advantages
Excellent Corrosion Resistance:
The hot-dip galvanized zinc coating protects the steel core from moisture, rain, and outdoor exposure, extending service life in harsh environments.
High Mechanical Strength:
GSW provides strong tensile performance, making it suitable for supporting overhead cables and resisting mechanical loads caused by wind, ice, and installation tension.
Reliable Long-Term Performance:
Manufactured according to ASTM A475 and BS 183 requirements, galvanized steel strand offers consistent quality for utility and infrastructure projects.
Cost-Effective Support Solution:
Compared with other high-strength support materials, galvanized steel strand provides an economical solution with good durability and easy installation.
Applications
GWS is mainly used where high mechanical strength and corrosion resistance are required.
- Typical applications include:
- Overhead transmission ground wire (earth wire)
- Lightning protection conductor for power lines
- Overhead line support and messenger wire
- Distribution pole support systems
- Aerial bundled cable support conductor
- Railway electrification grounding systems
- Telecommunication overhead support lines
Why Choose Zhongdong GSW?
| Customer Requirement |
Zhongdong Solution |
| Need corrosion-resistant support wire |
Hot-dip galvanized coating |
| Need high tensile performance |
High-strength steel wire |
| Need international compliance |
ASTM A475 / BS 183 production |
| Need customized specifications |
Various diameters and strand constructions |
| Need export-quality packaging |
Strong steel/wooden drum packing |
Quality Control
Each batch of Galvanized Steel Wire Strand is inspected to ensure reliable mechanical and coating performance.
Testing includes:
Inspection documents available:
-
Factory test report
-
Material certificate
-
Compliance certificate
Packaging and Delivery
GSW is supplied in export-standard packaging:
-
Wooden reels
-
Steel reels
-
Coil packaging
-
Customized lengths
Packaging can be adapted according to:
FAQ
What is Galvanized Steel Wire Strand used for?
GSW is mainly used as a mechanical support wire for overhead power lines, ABC cable messenger systems, utility poles, and communication cable support structures.
What is the difference between GSW and ACSR conductor?
GSW is mainly used for mechanical support and does not carry electrical current. ACSR is an electrical conductor used for power transmission.
Which standards does your GSW comply with?
Our Galvanized Steel Wire Strand can be manufactured according to ASTM A475 and BS 183 standards.
What zinc coating classes are available?
GSW can be supplied with different zinc coating levels, including ASTM Class A, Class B, and Class C, depending on corrosion protection requirements.
Can GSW be used as an ABC cable messenger wire?
Yes. Galvanized Steel Wire Strand is commonly used as the supporting messenger component for self-supporting aerial bundled cables.
Do you provide customized sizes?
Yes. Diameter, strand construction, tensile strength, coating class, and packaging can be customized according to project requirements.
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Galvanized Steel Wire Strand (GSW) ASTM A475 / BS 183 Images
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