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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 6567.1-2008 |
Technical drawings - Graphical symbols for piping systems - Basic principles 技术制图 管路系统的图形符号 基本原则 |
China National Standards Technical drawings Basic |
 English PDF |
| GB/T 17453-2005 |
Technical drawings-General principles of presentation-Part 50:Basic conventions for representing areas on cuts and sections 技术制图 图样画法 剖面区域的表示法 |
China National Standards Technical drawings Basic |
English PDF |
| GB/T 17450-1998 |
Technical drawings--Basic conventions for lines 技术制图 图线 |
China National Standards Technical drawings Basic |
English PDF |
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