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International Standard Category: Steels

GB 1222-1984    Spring steels
弹簧钢 ;
Category No.:77.080.20 Valid Status:superseded
Issued Organization:SAC Issued Date:1984-4-30
Implemented Date:1985-5-1 Abolished Date:
Superseded Standard.:GB/T 1222-2007 Spring steels
Superseded Date:2008-3-1
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