Steel Bars for Prestressed Concrete (PC Steel Bars) is a high-tech prestressed steel material developed by Japan's Nippon Kokusai Kogyo in the 1960s. It boasts features such as high strength and toughness, low relaxation, strong grip with concrete, excellent weldability, and good forgeability, which helps save materials. Both domestically and internationally, PC Steel Bars have been widely used in prestressed concrete components like high-strength centrifugal piles, power poles, and viaduct piers. They enjoy a particularly broad market in the international arena, especially in Southeast Asia.