HG/T 20519.28-1992 Flowchart; Equipment and piping layout; Pipeline axonometric drawing; Pipe fitting drawing; Equipment installation drawing line width and font requirements

HG/T 20519.28-1992 Flowchart; Equipment and piping layout; Pipeline axonometric drawing; Pipe fitting drawing; Equipment installation drawing Line width and font requirements HG/T20519.28-1992 Standard download decompression password: www.bzxz.net

Flowchart: Equipment and Pipeline Layout: Pipeline Axonometric: Pipe Fittings; Equipment Installation Drawing Line Width and Font Specifications HG20519.28-92
Flowchart; Equipment and Pipeline Layout; Pipeline Axonometric; Pipe Fittings; Equipment Installation Drawing Line Width and Font Specifications HG 20519.28-92
1.0.1 All lines must be clear, smooth, and uniform, and the width must meet the requirements. The spacing between parallel lines must be at least 1.5mm to ensure that the lines on the copy will not be confused or overlapped. 1.0.2 Line width
Line width is divided into three types: thick line 0.9~1.2mm; medium thick line 0.5~~0.7mm; thin line 0.15~0.3mm1.0.3 General provisions for the use of lines
The general provisions for the use of lines are shown in the following table:
Process piping and instrument flow chart
Auxiliary piping and instrument flow chart
Main material pipeline
Auxiliary pipeline main pipe
Public system piping and instrument flow chartPublic system piping main pipeEquipment layout drawing
Equipment pipe opening orientation drawing
Pipeline layout drawing
(solid line or dotted line)
(solid line or dotted line)
Pipeline axonometric drawing||tt| |Equipment support drawing
Pipe support drawing
Pipe fitting drawing
Equipment wheel
Equipment support
And pipe rack
Other material pipelines
Equipment support
Equipment foundation
Flanges, valves, sockets, welding and threaded connections
Representation of pipe fittings
Dotted line part
Dotted line part
Moving equipment (machine pump, etc.) If only the equipment foundation is drawn, the line width shall be 0.9mm
Flanges, valves
Doors and their
Note: The line width of boundary lines, regional dividing lines and graphic connection dividing lines shall be 0.9mm. 148
2 Font
2.0.1 All words (including numbers) in drawings and tables must be written in a correct font with clear strokes. They must be arranged neatly, with uniform spacing and thickness. They should meet the requirements of the national standard GB4457.3. 2.0.2 All words must be written freehand, but templates can be used when there are special requirements in the project. 2.0.3 Chinese characters should be written in Changfang Song style or (at least) regular script (except for signatures) as much as possible and should be based on the simplified characters officially announced by the state. Arbitrary simplification and fabrication are not recommended. 2.0.4 Font size (i.e. font height) should be selected according to the following table: Written content
Diagram name and view symbol in icon
Project name
Text description and axis number in drawing
Numbers and letters in drawingbzxz.net
Text in grid
Text in table (when grid is less than 6mm) Note: 1. When there is not enough space in the drawing, numbers and letters are allowed to use 2.5mm. 2. The width of the word is approximately equal to 2/3 of the height of the word.
Font size
2.0.5 The size of foreign letters is the same as the above 2.0.4. Foreign letters must be all capitalized and must not be written in cursive. 149
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