| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| CECS 331-2013 | English | RFQ |
ASK
|
Days<=10
|
Standard for qualification and certification of welding personnel of steel structural
|
CECS 331-2013
| Obsolete |
CECS 331-2013
|