Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
SY/T 7023-2023 | English | RFQ |
ASK
|
3 days [Need to translate]
|
(Code for Design of Shield Tunnel Crossing in Oil and Gas Transmission Pipeline Engineering)
| Valid |
SY/T 7023-2023
|
SY/T 7023-2014 | English | RFQ |
ASK
|
13 days [Need to translate]
|
Code for design of oil and gas transmission pipeline crossing by shield tunneling
| Obsolete |
SY/T 7023-2014
|