| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB 12231-1990 | English | RFQ |
ASK
|
Days<=3
|
Quality standard for steel castings for valve visual method
|
GB 12231-1990
| Obsolete |
GB 12231-1990
|