1Key Takeaways
This standard specifies a method to determine the roundness error value by two-point and three-point measurement, which is suitable for measuring the roundness error of the inner and outer circular elements of parts. There are differences between the values obtained by two-point and three-point measurement and the actu…
2Scope / Description
This standard specifies a method to determine the roundness error value by two-point and three-point measurement, which is suitable for measuring the roundness error of the inner and outer circular elements of parts. There are differences between the values obtained by two-point and three-point measurement and the actual roundness error value, which must be corrected by the reflection coefficient given in this standard. The standards related to this standard are GB 1183-80 "Terms and Definitions of Shape and Position Tolerance" and GB 1958-80 "Regulations for Testing of Shape and Position Tolerance"
5Citation Network
Standards that cite GB/T 4380-1984
6Frequently Asked Questions
What is GB/T 4380-1984?
GB/T 4380-1984 — Assessment of departure from roundness--Two and three point methods is an international standard developed by General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China. This standard specifies a method to determine the roundness error value by two-point and three-point measurement, which is suitable for measuring the roundness error of the inner and outer circular elements of parts. There are differences between...
What does GB/T 4380-1984 cover?
This standard covers: This standard specifies a method to determine the roundness error value by two-point and three-point measurement, which is suitable for measuring the roundness error of the inner and outer circular elements of parts. There are differences between the values obtained by two-point and three-point...
Who should use this standard?
This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.
What is the latest version of GB/T 4380-1984?
The current published version is GB/T 4380-1984, published on 1984-04-06. Always check for amendments or pending revisions.
How do I purchase GB/T 4380-1984?
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