| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| HG/T 20645.1-1998 | English | 519 |
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Days<=3
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Design Standart Piping Mechanic for Chemical Plant
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HG/T 20645.1-1998
| Obsolete |
HG/T 20645.1-1998
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