GB/T 131-1993
Mechanical drawings--Surface roughness symbols and methods of indicating (English Version)

Standard No.

GB/T 131-1993

Language

Chinese, Available in English version

Release Date

1993

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2007-02

Replace By

GB/T 131-2006

Latest

GB/T 131-2006

Scope

This standard specifies the surface roughness symbols and codes of parts and their injection methods on drawings. This standard applies to mechanical and electrical product drawings and related technical documents. Other drawings and technical documents can also be adopted by reference.

GB/T 131-1993 history

• 2006 GB/T 131-2006 Geometrical Product Specifications (GPS). Indication of surface texture in technical Product documentation
• 1993 GB/T 131-1993 Mechanical drawings--Surface roughness symbols and methods of indicating