HG/T 20559.4-1993
Pipeline instrument flow chart design regulations Pipeline instrument flow chart pipeline numbering and labeling (English Version)
- Standard No.
- HG/T 20559.4-1993
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Chemical Industry
- Latest
- HG/T 20559.4-1993
HG/T 20559.4-1993 history
- 1970 HG/T 20559.4-1993 Pipeline instrument flow chart design regulations Pipeline instrument flow chart pipeline numbering and labeling
