GB 6567.5-86 Drawing Method for Axonometric Diagrams of Pipe Systems, Fittings and Valves, etc.
This national standard GB 6567.5-86 was approved on November 14, 1986, issued on May 1, 1987 and imposed on January 1, 1988 by the State Administration for Quality Supervision and Inspection of Machinery Industry.
This standard is applicable to integral and plant piping systems, and the drawing method of pipe fittings and valve diagrams. It applies to axonometric diagrams of various piping components and devices, and specifies the schematic drawing specifications of axonometric analyses of pipes, fittings and valves in the plan diagram, with the number and shape of the drawings, combined with other standards methods, and the form and content of the drawings.
The standard is divided into five parts as follows:
1. General rules
2. Overview of drawing axonometric diagrams
3. Axonometric diagram symbol
4. Axonometric diagram drawing method
5. Symbolic representation
1. General rules
1.1 The basic principles of these rules are clearly expressed, standardized, complete and correct.
1.2 Axonometric diagrams are the symbolic diagrams of component parts and partial parts of an isolated component or an isolated component of a system.
1.3 Axonometric diagrams should be drawn according to the principle of location, component type, component size and component forming, as well as the principle of complexity and simplicity of the diagram.
2. Overview of drawing axonometric diagrams
2.1 The axonometric diagram of the pipe can be divided into the front axonometric diagram, the general axonometric diagram and the face axonometric diagram according to the type or position of the component to be expressed. The axonometric diagrams of the associated components and partially isolated components can also be similarly divided.
2.2 Axonometric diagrams are generally drawn in the top view. However, when it is necessary to draw a component from a certain direction, multiple directions with sides, top or bottom views can be combined to render an axonometric diagram.
2.3 The axonometric diagram consists of two parts: the general diagram composed of straight lines, curves, arcs and other shapes, and the symbol composed of reflective surfaces and objects.
3. Axonometric diagram symbol
3.1 Symbols should be generally selected according to the specific device or component shape. There are five types: schematic, graphic, detailed components, abbreviations and specifications.
3.2 Schematic symbols represent the single component symbol, simple graphic symbol and general symbol (organization symbol) which is mainly used in the schematic diagram.
3.3 Graphical symbols are mainly divided into contours, resizing and surface symbols.
3.4 Detailed component symbols include the symbols of valve core, connected parts and the parts that need to be clear at the scene.
3.5 Abbreviation symbols are generally used for uniform symbols in diagrams.
3.6 Specified symbols refer to special-shaped symbols or external symbols of special equipment, such as actuators, meters, and feedback controllers.
4. Axonometric diagram drawing method
4.1 Axonometric drawing method refers to the application of certain axonometric angles for the axonometric diagram. Axonometric diagrams may be simple or complex, and according to the presence or absence of different parts, the axonometric drawing is divided into simple and complex axonometric drawings, respectively.
4.2 Simple axonometric diagrams, which are mainly composed of one side axonometric diagrams and multi-view combined axonometric diagrams, are mainly used in simpler components.
4.3 Complex axonometric diagrams, which are mainly composed of multi-corner axonometric diagrams, multi-corner cross axonometric diagrams and coordinate location axonometric diagrams, are mainly used in more complicated components.
5. Symbolic representation
5.1 The symbols of component diagrams include symbols of components, symbols of accessories and symbols for multiple components, and symbols for the combination and combination of the component installation form.
5.2 Component symbol which includes the component outline and dark line symbol, which is mainly used for the general axonometric diagram.
5.3 Accessories symbol includes dashed line connection shape symbol, multi-view display shape symbol and connector symbol, which is mainly used in the face axonometric diagram.
5.4 Multiple component symbols mainly refer to the symbols representing the general axonometric diagram of the component group composition.
5.5 Combination assembly symbols mainly refer to symbols representing the commonly used combination assembly form in the plan axonometric diagram.
