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| Chinese National Standard Category: Chemical machinery and equipment parts |
| English Title: | Optional dimension series for seamless and welded steel tubes used for chemical tubing |
| Chinese Title: | 化工配管用无缝及焊接钢管尺寸选用系列 |
| Standard No.: | HG/T 20553-1993 |
| Category No.: | G91 |
| Issued by: | |
| Issued on: | 1994-01-22 |
| Implemented on: | 1996-3-1 |
| Status: | superseded |
| Superseded by: | HG/T 20553-2011 Selection series of steel pipe size for chemical piping |
| Superseded on: | 2011-6-1 |
| Abolished on: | 2011-06-01 |
| Superseding: | HGJ 35-1990 |
| Word Count: | 8000 words |
| Similar Standards: | GB/T 29465-2023 HG/T 4571-2013 GB/T 29465-2012 HG/T 2733-2011 HG/T 4169-2011 HG/T 2098-2011 HG/T 3181-2009 HG/T 4113-2009 HG/T 3124-2009 HG/T 4114-2009 GB/T 24319-2009 HG/T 2129-2009 HG/T 4082-2009 HG/T 21574-2008 HG/T 21557.3-2006 HG/T 3796.12-2005 HG/T 3796.2-2005 HG/T 3796.11-2005 HG/T 3796.9-2005 HG/T 3796.6-2005 |
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