HGJ 206-1992 Specifications for Construction and Acceptance of Chemical Machinery Installation Engineering (Small and Medium Piston Compressors) (English Version)
2017HG/T 20206-2017 Specifications for Construction and Acceptance of Chemical Machinery Installation Engineering (Small and Medium Piston Compressors)
1992HGJ 206-1992 Specifications for Construction and Acceptance of Chemical Machinery Installation Engineering (Small and Medium Piston Compressors)
HGJ 206-1992 Specifications for Construction and Acceptance of Chemical Machinery Installation Engineering (Small and Medium Piston Compressors) was changed to HG/T 20206-2017 Specifications for Construction and Acceptance of Chemical Machinery Installation Engineering (Small and Medium Piston Compressors).