| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| HG 20519.38-1992 | English | RFQ |
ASK
|
Days<=3
|
Piping class number and piping materials classification
|
HG 20519.38-1992
| Obsolete |
HG 20519.38-1992
|