Plain PC Wire

High-carbon steel smooth surface prestressed concrete wire with low relaxation and high tensile strength — the desirable steel material for large-load, long-span PC structures including PC bridges, PC sleepers, PC pipes and sloping rope bridges.

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Product Overview

Plain PC Wire — also called plain surface PC steel wire or smooth PC wire — is a traditional type of PC wire. Its surface is smooth, without ribs or indentations. It does not have an explicit yield point, so users can cut it to any appropriate length as needed.

Technical Specifications

Material High carbon steel (SWRH 82B / 77B)
Diameter 3 mm – 12 mm
Surface Smooth (no ribs, not indented)
Tensile Strength 1470 MPa, 1570 MPa, 1670 MPa, 1770 MPa, 1860 MPa
Yield Point No explicit yield point — can be cut to required length
Standards BS 5896, BS5 892, GB/T 5223-2002, ASTM A421, ASTM A468, ASTM A911, ASTM A881/A881M, ISO 6934, ISO 6932, JIS G 3536, UNE 36094, etc.

Key Advantages

Relaxation Low relaxation for long-term structural performance
Tensile Strength High tensile strength suitable for large-load applications
Cross-section Steel wire cross-section area without any loss
Fixed Performance Good fixed performance for prestressed concrete structures
Flexibility No explicit yield point — cut to any appropriate length as needed
Supply Range Available in diameters 3 mm to 12 mm; produced per specific requirements
Common Sizes 5 mm, 7 mm and 9 mm — high tensile strength and low relaxation

Dimension Parameters

Plain PC Wire — PC Series dimension parameters from 3 mm to 12 mm nominal diameter

PC Series — Wire Dimension Parameters

Item Nominal Diameter (mm) Tolerance (mm) Cross-sectional Area (mm²) Mass per Meter (g/m)
PC-300 3.00 ± 0.04 7.07 55.5
PC-400 4.00 12.57 98.6
PC-500 5.00 ± 0.05 19.63 154
PC-600 6.00 28.27 222
PC-625 6.25 30.68 241
PC-700 7.00 38.48 302
PC-800 8.00 ± 0.06 50.26 394
PC-900 9.00 63.622 499
PC-1000 10.00 78.54 616
PC-1200 12.00 113.1 888
Plain PC wire can be supplied in different diameters from 3 mm to 12 mm — all produced according to your specific requirements.

Product Features

Why Plain PC Wire is the preferred choice for large-load, long-span prestressed concrete structures

Good Fixed Performance

Smooth surface wire delivers excellent fixed performance in bonded and unbonded prestressed concrete systems across all structural applications.

High Tensile Strength & Low Relaxation

Available in tensile grades 1470–1860 MPa with low relaxation, ensuring long-term structural integrity and durability in demanding applications.

Full Cross-Section — No Loss

Smooth surface means the full wire cross-section area is preserved without any loss, maximising load-carrying capacity per unit weight.

Applications

Plain PC Wire is widely used across infrastructure, construction, and industrial projects requiring high tensile prestressed reinforcement

PC Structures

Plain PC strand systems, PC water pipes and prestressed concrete construction

Road & Bridge Structures

Highways, bridges, airports, railway sleepers, tunnels and large-span sloping rope bridges

Building Construction

Industrial and civil prefabricated concrete slabs, frame of roofs, and wall boards

Other Uses

Overhead crane beams, tubular piles, water conservancy projects, and TV towers

Applicable Standards

Plain PC Wire manufactured and tested in compliance with major international and regional standards

BS 5896
British Standard — High-Tensile Steel Wire Strand
BS5 892
British Standard for PC Steel Wire
GB/T 5223
Chinese National Standard for PC Wire (2002)
ASTM A421
American Standard — Uncoated Stress-Relieved Wire
ASTM A468
American Standard for PC Wire
ASTM A911
American Standard for PC Steel Wire
ASTM A881
American Standard A881 / A881M
ISO 6934
International Standard — PC Steel Wire
ISO 6932
International Standard — Cold Drawn Wire
JIS G 3536
Japanese Industrial Standard — PC Wire
UNE 36094
Spanish Standard for Prestressing Steel Wire