HG 20612-1997（编制说明）
Metal ring gaskets for steel pipe flanges (European system) (English Version)
- Standard No.
- HG 20612-1997（编制说明）
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Chemical Industry
- Status
- 2009-07
- Replace By
- HG/T 20612-2009
- Latest
- HG/T 20612-2009
