GB 6567.3-86 Piping system graphic symbol pipe fittings

Piping System Graphic Symbols GB 6567.3-86 In order to simplify the diagram presentation of engineering design, Chinese standards have issued a national standard for the graphic symbols used to identify the piping system. The standard is GB 6567.3-86. The standard specifies the symbols and decor......

Piping System Graphic Symbols GB 6567.3-86

In order to simplify the diagram presentation of engineering design, Chinese standards have issued a national standard for the graphic symbols used to identify the piping system. The standard is GB 6567.3-86.

The standard specifies the symbols and decorations for identification of pipe symbols, pipe intersection symbols, pipe connection symbols, pipe accessories symbols, valve symbols, other components symbols, junction symbols, and other symbols. Each symbol corresponds to a corresponding component of the pipeline system, indicating the size, direction, type and material of the component. When using the standard symbols to draw the symbols of the pipeline system, the symbols should be placed in the position corresponding to the actual location of the components in the system.

In addition to the above symbols, the standard also specifies some parameters related to the components of the pipelining system, such as pressure grade identification, width of the line connecting the components, angle of branch pipe, numerical expression of diameter and wall thickness of pipeline, online numerical expression of branch pipe, pressure-bearing temperature rating identification, non-pressure-bearing materials identification and welding connection identification. The data filled in these parameters can be presented by descriptive or numerical symbols, but the symbols should be chosen according to the actual situation, and the symbols should be indicated basically in the set format if numerical symbols are used.

The introduction of GB 6567.3-86 standard for graphing pipe system has made the drawing and understanding of the pipe system convenient, and can ensure the accuracy of engineering design. It also standardizes the graphical symbols of pipeline, saves manpower and material resources, improves work efficiency and is beneficial to the computer graphic display and computer control of pipeline system.

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