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HG/T 20559-1993 Active
HG/T 20559-1993 Specifications for the Design of Pipeline Instrumentation Flowcharts; Basic Unit Models of Pipeline Instrumentation Flowcharts
General Product Information
| Document Type | Industry standards-Chemical industry |
|---|---|
| Standard Status | Active |
| Standard Code | HG/T 20559-1993 |
| Implement Date | 1994-11-01 |
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