GB/T 4457.4-2002
ActiveMechanical drawings--General principles of presentation--Lines
机械制图 图样画法 图线
Application Summary AI generated
This standard specifies the types, designations, and application rules for lines used in mechanical engineering drawings. It is applied in the creation and interpretation of technical documentation for manufacturing, assembly, and quality inspection across industries such as automotive, aerospace, and machinery production. The standard ensures consistent line usage for visible outlines, hidden edges, center lines, and section lines, facilitating clear communication between designers and manufacturers.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.