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International Standard Category: Cement. Gypsum. Lime. Mortar

GB 178-1977    Standard sand for cement strength test
水泥强度试验用标准砂 ;
Category No.:91.100.10 Valid Status:abolished
Issued Organization:NSMB Issued Date:1977-01-02
Implemented Date:1979-7-1 Abolished Date:2005-10-14
Superseded Standard.: Superseded Date:
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