GB/T 6312-2004

Abolished

Micrometer for measuring pipe wall thicknesses

壁厚千分尺

Standard Type

GBT

ICS

17.040.30

CCS

J42

Status

Abolished

Issue Date

2004-02-10

Implementation

2004-08-01

Centralized Committee

中国机械工业联合会

Issuing Authority

中国机械工业联合会

Application Summary AI generated

GB/T 6312-2004 specifies the design, dimensions, technical requirements, and testing methods for micrometers used to measure pipe wall thicknesses. It is applied in manufacturing and quality inspection of metal pipes, tubing, and cylindrical components where precise wall thickness measurement is critical, such as in the automotive, aerospace, and construction industries. The standard ensures consistency and accuracy in production and metrology laboratories for verifying compliance with design specifications.

Related Standards

GB/T 14495-2009 Geometrical Product Specifications (GPS)- Surface texture: Profile method Roughness comparison specimens for wooden pieces GB/T 3934-2003 Specification of gauges for general purpose screw threads GB/T 9056-2004 Metal ruler GB/T 9058-2004 Micrometer with prismatically arranged measuring faces GB/T 8124-2004 Tolerances and general features of gauges for metric trapezoidal screw threads GB/T 6091-2004 Knife straight edge GB/T 8122-2004 Dial bore gauges GB/T 6314-2004 Internal micrometers with three-point contact

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.