| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| TB/T 2921-1998 | English | 679 |
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Days<=5
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(Electrified railway catenary steel columns)
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TB/T 2921-1998
| Obsolete |
TB/T 2921-1998
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