Customization: | Available |
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After-sales Service: | Pre-in-Post |
Warranty: | Forever |
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Product Introduction
The 1x7 structure "12.7mm, 15.20mm, 15.70mm, 17.80mm" unbonded prestressed steel strand is a uniquely engineered steel bar, fortified with anti-corrosion grease and a robust sheath. Ideal for water conservancy and hydro-power projects, this product is gaining traction in modern wind power projects. With the height of wind power towers now reaching or exceeding 120m, concrete towers utilizing external prestressing technology are increasingly adopting unbonded prestressed steel strands. These strands offer exceptional advantages, such as superior corrosion resistance and enhanced fatigue resistance, which collectively bolster wind resistance and significantly extend the service life of the structures.
Aligned with the JG/T 161-2016 Unbonded Prestressed Steel Strand standard, we have revolutionized the design process to streamline the testing method for sheath tensile properties. This innovation enhances practicality, making it easier to assess sheath performance, effectively standardize sheath quality, and improve overall project safety and quality assurance.
Product Characteristics
Designed for the outer cable of wind power concrete towers, the unbonded steel strand features customizable sheath thickness and grease composition to meet specific user requirements. The sheath's surface is dense, smooth, and allows the steel strand's outline to be visible. It meets stringent quality criteria, ensuring no air holes, no mechanical damage, no cracks, and no visible wrinkles.
Product Application
Wind power, water conservancy
Hydro-power Station
South-North Water Transfer project
River Channel and other national key water conservancy and hydropower projects
UNBONDED PC STRAND | ||||||
Size(mm) | Tensile Strength(MPa) | Section Area(mm2) | Gresase mass per meter(g/m) | Minimum thickness of coat(mm) | Friction factor(μ) | Effect modulus(K) |
12.7 | 1720,1860,1960 | 98.7 | 43 | ≥1.0 | 0.04~0.1 | 0.003~0.004 |
15.2 | 1570,1670,1770,1860,1960 | 140.0 | 50 | |||
15.24 | 1860 | 140.0 | 50 | |||
15.7 | 1860 | 150.0 | 53 |
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