7-Wire Steel Strand for Concrete Prestressing from China
This 7-wire steel strand consists of six outer wires helically wound around a central wire, with a total diameter not exceeding 16 mm, specifically engineered for prestressing concrete structures like bridges and buildings. It falls under HTS 7312.10.3012 as stranded wire of iron or steel, not electrically insulated, designed for prestressing concrete, and classified as 'other' within that subheading. The high tensile strength and precise construction ensure it can withstand the forces required to compress concrete.
Duty Rate — China → United States
Rate breakdown
Import Tips
• Obtain mill test certificates verifying minimum tensile strength (typically 1860 MPa) and compliance with ASTM A416 standards; declare exact wire diameter and construction to avoid misclassification; watch for anti-dumping duties on certain steel strand origins like China