| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| NB/T 20450.4-2017 | English | RFQ |
ASK
|
Days<=6
|
Alternative welding code for mechanical components of PWR nuclear islands Part 4: Production welds and heat treatment
|
NB/T 20450.4-2017
| Obsolete |
NB/T 20450.4-2017
|