Steel Wire Rod for Steel Prestressed Strand

Steel wire rod for prestressed strand is the core raw material R&D by Wongsteel (Beijing Yijing Technology) for high-end engineering fields such as bridge construction and large-scale civil engineering. It covers two high-performance grades: **SWRH82B** and **SWRH82B-G**, strictly following the Japanese Industrial Standard JIS G3506 (or protocol standards for some applications). As the key material for manufacturing low-relaxation and high-strength prestressed steel strands and wires, it is widely used in core projects such as bridge cables and reinforcement of large building structures.

**SWRH82B**, as a basic high-performance grade with specifications covering **6.5mm-15mm**, features extremely stable alloy composition and extremely low harmful impurity content, with high steel purity to ensure mechanical stability of the wire rod from the source. The decarburization layer thickness is precisely controlled and surface defects are minimal, avoiding performance degradation in subsequent processing and use. The core feature is **high sorbite rate** and uniform grain structure, coupled with excellent tensile strength and stable overall performance. It can be processed into low-relaxation prestressed steel strands and high-quality prestressed steel wires, serving as the standard material for core load-bearing components such as bridge cables.

**SWRH82B-G** is a special-grade wire rod for higher strength, with specifications covering **8mm-14mm**. It can comply with JIS G3506 standard or protocol standards agreed by both parties. It achieves further strengthening in composition uniformity and tissue density. It also has the core advantages of low impurities, small decarburization layer and high sorbite rate, while possessing more excellent tensile strength, pull-out resistance and torsional properties. This wire rod is specially designed for **high-strength prestressed steel strands** and **high-strength prestressed steel wires**, meeting the stringent requirements of ultra-high strength and high reliability for large bridges and special engineering, providing ultimate safety guarantee for engineering structures.

Both wire rods undergo strict quality inspection and process control, can stably output metal wires with high toughness and high fatigue resistance, adapting to precision processing technologies such as high-speed wire drawing and strand twisting. They ensure the long-term reliability of final products in complex environments. Wongsteel (Beijing Yijing Technology) can provide accurate material matching and customized supply services according to customers' engineering specifications, capacity requirements and execution standards, while offering professional technical support to facilitate the smooth progress of key projects such as bridge construction and civil engineering.