STRANDED WIRE OF RUST PROOF-COATED PC STEEL AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To provide a stranded wire of rustproof-coated PC steel excellent in rustproofness without having a curl caused by winding when it is used by pulling out from a drum-wound state and generating white lines and cracks in the coated layer when it is bent in an acute angel, and its production. SOLUTION: This twisted wire has a structure in which the inside of stranded wires, i.e., a space between a core wire and side wires and the outer surfaces of the stranded wires are filled and coated with an internal resin 2 comprising an ethylene-acrylic acid copolymer resin, an ethylene-methacrylic acid copolymer resin or their mixture and the outer surface of the coat is coated with an outer layer resin 3 having >=40 kgf/mm2 elasticity.