GB/T 17851-1999
Geometrical tolerancing Datums and datum system (English Version)

Standard No.

GB/T 17851-1999

Language

Chinese, Available in English version

Release Date

1999

Published By

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

Status

Be replaced 2011-10

Replace By

GB/T 17851-2010

Latest

GB/T 17851-2022

Scope

This standard specifies the definition of datum and datum system for shape and position tolerances, marking on technical drawings and how to reflect them in practical applications.

GB/T 17851-1999 history

• 2022 GB/T 17851-2022 Geometrical product specifications (GPS)—Geometrical tolerancing—Datums and datum systems
• 2011 GB/T 17851-2010 Geometrical Product Specifications(GPS).Geometrical tolerancing.Datums and datum system
• 1999 GB/T 17851-1999 Geometrical tolerancing Datums and datum system