| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB 12971.3-1991 | English | 239 |
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Days<=2
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Trolley and contact wires for electric traction--Part 3: Aluminium and steel composite trolley and contact wires
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GB 12971.3-1991
| Obsolete |
GB 12971.3-1991
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