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See Chinese contents: GB/T 5224-2023 GB/T 5224-2023: Steel strand for prestressed concrete
This document specifies the classification, code and labeling, order content, dimensions, cross-sectional shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of steel strand for prestressed concrete. This document is applicable to steel strand for prestressed concrete structures twisted from cold-drawn round steel wires, indented steel wires and helical rib steel wires (hereinafter referred to as the ¡°steel strand¡±).
