Pc Strand Manufacturer
Aogang is a PC strand manufacturer supplying prestressed steel strand for bridges, railways, highways, tunnels, large buildings, precast concrete structures, and mine support projects. The product is manufactured by stranding multiple high-strength carbon steel wires and applying stabilization treatment. It is used to introduce compressive stress into concrete before the structure is subjected to service loads.
Our product range includes 1×7 and 1×19 prestressed steel strand, as well as HDPE-sheathed unbonded steel strand. Common diameters include 12.7 mm, 15.24 mm, and 15.7 mm, with additional sizes available according to the required strand construction. Products can be manufactured to GB/T 5224, ASTM A416, BS 5896, EN 10138, JIS G 3536, and other contract-specified standards.
Structure: 1*7 , 1*19
Common diameter: 12.7mm , 15.24mm , 15.7mm
Tensile strength: 1860MPa , 1960MPa
| Product Type | Structure and Size Range | Typical Procurement Requirement |
|---|---|---|
| Bonded 1×7 PC strand | 9.53–21.6 mm | Bridges, precast beams, post-tensioning and prestressed concrete components |
| 1×19 PC strand | 21.8–28.6 mm | Projects requiring a larger diameter or special strand construction |
| Unbonded PC strand | Commonly 12.7–15.7 mm | Building slabs and designated unbonded post-tensioning systems |
| Customized prestressed strand | According to project specification | Special strength, diameter, length, coating or packaging |
| Item | Bonded PC Strand | Unbonded PC Strand |
|---|---|---|
| Surface | Bare steel strand | Corrosion-inhibiting grease and HDPE sheath |
| Stress transfer | Bonded to concrete directly or after duct grouting | Strand moves relative to the surrounding sheath |
| Typical projects | Bridges, precast beams, railway components and infrastructure | Building slabs and specified unbonded post-tensioning systems |
| Main purchasing parameters | Strength, relaxation, elongation, surface and anchorage compatibility | Core strand properties plus grease and sheath specifications |
| Installation requirements | Duct, grouting and anchorage system | Anchorage, sheath protection and end sealing |
The typical production process is:
Raw Material Inspection → Pickling and Surface Preparation → Wire Drawing → Stranding → Stabilization Heat Treatment → Tension-Controlled Winding → Testing → Coil Packaging
Aogang uses SWRH82B high-carbon steel raw material for standard prestressed strand production. Diameter, strength, length and unbonded construction can be customized according to the project specification.
Highway and railway bridges;
Precast bridge girders;
High-rise buildings;
Long-span structures;
Railway sleepers;
Prestressed concrete slabs;
Tunnels and rail transit;
Water conservancy projects;
Mine support and rock anchorage;
Wind power foundations;
Other engineered prestressed structures.
PC Strand is specifically manufactured for prestressed concrete. It has controlled tensile strength, elongation, relaxation, dimensions and stabilization treatment. Ordinary steel strand cannot be used as a direct substitute.How do I choose between 12.7 mm, 15.24 mm and 15.7 mm?
These diameters have different nominal areas, unit weights and breaking forces. They may also correspond to different standards and anchorage systems. Follow the project design specification.
One principal acceptance standard should be selected. If the project has additional requirements from another standard, these requirements should be listed individually in the technical agreement.
Yes. The corrosion-inhibiting grease, HDPE sheath, sheath thickness, external diameter and integrity test requirements should be specified.
Relaxation testing can be arranged according to the selected standard and contract. Confirm the relaxation class, test load and report format before ordering.
Yes, within production and transportation limits. Site lifting capacity, pay-off equipment and container weight restrictions should be considered.
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+86 131 8000 1253
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