| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | Related Standard |
| HG 20519.33-1992 | English | RFQ |
ASK
|
Days<=3
|
(Piping layout and isometric drawings on pipes, fittings, valves and pipe special pieces legend)
| Obsolete |
HG 20519.33-1992
|