| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| DL/T 646-2006 | English | 799 |
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Manufacturing Technical Requirements for Transmission and Substation Steel Tubular Structures
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DL/T 646-2006
| Obsolete |
DL/T 646-2006
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