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| International Standard Category: Washers, locking elements |
GB/T 1230-1991 High strength plain washers for steel structures
钢结构用高强度垫圈 ;
| Category No.: | 21.060.30 | Valid Status: | superseded |
| Issued Organization: | China Machinery Industry Federation | Issued Date: | 1991-04-22 |
| Implemented Date: | 1992-1-1 | Abolished Date: | 2006-11-01 |
| Superseded Standard.: | GB/T 1230-2006 High Strength Plain Washers for Steel Structures |
Superseded Date: | 2006-11-1 |
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