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Product Introduction
The 1x7 structure, with sizes '12.7mm, 15.20mm, 15.70mm, 17.80mm', is a remarkable unbonded prestressed steel strand. Engineered to deliver unmatched performance, it features a protective anti-corrosion grease and a sturdy sheath, making it an essential choice for extensive water conservancy and hydropower projects. Recently gaining prominence in wind power projects, this steel strand shines in applications involving wind power towers, where heights now frequently surpass 120m. Its revolutionary design makes it the preferred choice for concrete towers utilizing external prestressing technology, offering outstanding corrosion and fatigue resistance. These advantages significantly bolster wind resistance, ensuring longer-lasting durability and service life for structures it fortifies.
Compliant with the JG/T 161-2016 Unbonded Prestressed Steel Strand standard, our pioneering design streamlines the testing method for sheath tensile properties, enhancing both practicality and efficiency.Our cutting-edge approach elevates sheath performance, setting a new benchmark for quality that enhances project safety and reliability.
Product Characteristics
For wind power concrete towers, our unbonded steel strand boasts an incredibly dense and smooth sheath surface, clearly outlining the steel strand's profile. The sheath and grease thickness are customizable to meet specific technical requirements of users. We uphold the highest standards of surface quality, ensuring freedom from air holes, mechanical damage, cracks, and visible wrinkles, thereby surpassing rigorous industrial standards.
Product Application
Wind Power, Water Conservancy
Hydropower Stations
South-North Water Transfer Project
River Channels 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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