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Title Standard No. Implemented On
Spring steels for automotive suspension system―Part 2:Hot rolled round steel bar and wire rodGB/T 33164.2-20162017-9-1
Spring steelsGB/T 1222-20162017-9-1
Spring steels for automotive suspension system―Part 1:Hot rolled spring steel flat barsGB/T 33164.1-20162017-9-1
Spring steelsGB/T 1222-20072008-3-1
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