| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 1231-1991 | English | 359 |
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Days<=3
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Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures
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GB/T 1231-1991
| Obsolete |
GB/T 1231-1991
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