| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| SY/T 4217.4-2019 | English | RFQ |
ASK
|
Days<=3
|
(Petroleum and natural gas construction engineering construction quality acceptance specification communication project Part 4: Long-distance pipeline station communication)
|
SY/T 4217.4-2019
| Valid |
SY/T 4217.4-2019
|