DL/T 646-2021
Technical conditions for manufacturing steel pipe structures for power transmission and transformation (English Version)
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DL/T 646-2021
Standard No.
DL/T 646-2021
Language
Chinese,
Available in English version
Published By
Professional Standard - Electricity
Latest
DL/T 646-2021
DL/T 646-2021 history
1970
DL/T 646-2021
Technical conditions for manufacturing steel pipe structures for power transmission and transformation
2012
DL/T 646-2012
Manufacturing technical requirements for transmission and substation and steel tubular structures
2006
DL/T 646-2006
Manufacturing Technical Requirements for Transmission and Substation Steel Tubular Structures
1998
DL/T 646-1998
Technical specification of manufacturing steel transmission pole structures
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