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Non-coated Steel Wire
Spring Wire / Piano Wire（Uncoated）
SWRH62A / SWRH72A/72B / SWRH82A/82B / SWPA / SWPB / SWRS82A/82B (high-grade carbon steel)
High-quality carbon steel: 10#/20#/45, 60#/62A/62B, 70#/72A/72B, 80#/82A/82B, 87A/87B, 92A, etc.
High-quality carbon steel: 60#/62A/62B, 70#/72A/72B, 80#/82A/82B, 87A/87B, 92A, etc.
Low Carbon Steel Wire（Uncoated）
Application：Widely used in automotive seat frames (front and rear), offering excellent formability and weldability
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