Prestressed concrete cable is a high-tech engineering steel product with outstanding structural, mechanical, and technological characteristics, satisfying the rigorous requirements of prestressed concrete structures. Regarding its configuration, the product is fabricated as a 7-wire cable, consisting of a straight central core wire uniformly wrapped by six outer wires in a left-hand lay direction, ensuring structural integrity and uniform stress distribution along the length of the cable. In terms of mechanical properties, the PC cable achieves an exceptionally high tensile strength, commonly at Grade 270 (equivalent to 1,860 MPa), which is 4 to 5 times superior to conventional reinforcing steel. Additionally, it features a yield strength at 1% extension of not less than 90% of the nominal tensile strength, and a minimum elongation of 3.5%. The low-relaxation property is a critical advantage of the Low Relaxation type, with a relaxation value not exceeding 2.5% after 1,000 hours of testing under standard conditions, effectively maintaining the prestressing force throughout the structural life cycle. Regarding product specifications, the cable is supplied in standard nominal diameters including 9.3 mm, 12.7 mm, and 15.2 mm. The cables are factory-coiled to ensure convenience and safety during transport and on-site installation. PC cable possesses a coefficient of thermal expansion equivalent to that of concrete, ensuring compatibility under thermal deformation in real operating conditions, while demonstrating excellent fatigue resistance under dynamic and cyclic loading in bridge and transportation structures.