GB/T 4257-2004
ActiveCore drills--Technical requirements
扩孔钻 技术条件
Application Summary AI generated
GB/T 4257-2004 specifies technical requirements for core drills, including material, hardness, geometric tolerances, and surface finish. It is applied in the manufacturing and quality inspection of core drills used for enlarging existing holes in metalworking and machining operations. The standard ensures consistent performance and interchangeability in industrial drilling applications.
Related Standards
GB/T 19324-2003
Coated abrasives--Plain sheets with holes for dust extraction
GB/T 2492-2003
Bonded abrasive products--Permissible unbalances of grinding wheels as delivered--Testing
GB/T 3045-2003
Abrasive grains--Chemical analysis of silicon carbide
GB/T 4676-2003
Abrasive grains--Sampling and splitting
GB/T 6408-2003
Super abrasive--Cubic boron nitride
GB/T 19323-2003
Coated abrasives--Plain discs with holes for dust extraction
GB/T 3464.2-2003
Long reduced shank taps
GB/T 6090-2003
Drill chuck tapers
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.