HG/T 20637.2-2017
Specifications for the preparation of engineering design documents for chemical plant automatic control specialty Graphical symbols and text codes for automatic control professional engineering design (English Version)

Standard No.

HG/T 20637.2-2017

Language

Chinese, Available in English version

Release Date

2018

Published By

Professional Standard - Chemical Industry

Latest

HG/T 20637.2-2017

Replace

HG/T 20637.2-1998

HG/T 20637.2-2017 history

• 2018 HG/T 20637.2-2017 Specifications for the preparation of engineering design documents for chemical plant automatic control specialty Graphical symbols and text codes for automatic control professional engineering design
• 1970 HG/T 20637.2-1998 Guid for preparation of engineering documents of instrumentation