This part of GB/T 4457 specifies various section symbols and their drawing methods in mechanical drawings. This section applies to the sectional view of the mechanical drawing and the representation of the sectional area in the sectional view.
GB/T 4457.5-2013 Referenced Document
GB/T 17453-2005 Technical drawings.General principles of presentation.Basic conventions for representing areas on cuts and sections
GB/T 4457.4-2002 Mechanical drawings--General principles of presentation-Lines
GB/T 4457.5-2013 history
2013GB/T 4457.5-2013 Mechanical drawings.Basic conventions for representing areas on cuts and sections