| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| GB 50422-2017 | English | RFQ |
ASK
|
3 days [Need to translate]
|
Technical code for engineering of prestressed concrete pavement
| Valid |
| GB 50422-2007 | English | RFQ |
ASK
|
7 days [Need to translate]
|
Technical code for engineering of prestressed concrete pavement
| Obsolete |