GB/T 4771-1984
Replaced
GB/T 37991-2019
Active
National standards
GB/T 37991-2019 Measuring method for ultra-thin glass reheating line shrinkage—Dilatometer method
GB/T 37991-2019 Measuring method for ultra-thin glass reheating line shrinkage—Dilatometer method
Basic Information
Standard Code:
GB/T 37991-2019
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Industrial technology glass
ICS Name:
\nGlass products
Publish Date:
2019-08-30
Implement Date:
2020-07-01
Pages:
5 pages
Scope
This standard specifies the terms and definitions, test principles, test devices and conditions, samples, test steps, result calculation, and test reports for determining the reheat line shrinkage of ultra-thin glass using the expansion gauge method. This standard is applicable to the testing of the reheat line shrinkage of ultra-thin glass with a thickness of 0.4 mm to 1.1 mm. The testing of the reheat line shrinkage of flat glass with other thicknesses can refer to this standard.
Development Information
Referenced Standards
Related Standards
GB/T 6552-1986
Replaced
GB/T 6552-1986 Standard test method for impact resistance of glass containers
GB 11417.1-1989
Replaced
GB 11417.1-1989 Hard corneal contact lenses
GB 11417.2-1989
Replaced
GB 11417.2-1989 Soft hydrophilic contact lenses
GB/T 12415-1990
Replaced
GB/T 12415-1990 Pharmaceutical glass containers—Stress examination— Test methods
GB/T 12416.1-1990
Abolished