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International Standard Category: Industrial process measurement and control

HG/T 20637.1-1998    Composition and preparation for engineering documents of instrumentation
自控专业工程设计文件的组成和编制;
Category No.:25.040.40 Valid Status:superseded
Issued Organization:State Bureau of Petroleum and Chemical Industries Issued Date:1998-6-22
Implemented Date:1999-1-1 Abolished Date:2018-04-01
Superseded Standard.:HG/T 20637.1-2017 Composition and preparation for engineering documents of instrumentation
Superseded Date:2018-4-1
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