GB/T 4227-1984
abolished_transferred
GB/T 4697-2017
Active
National standards
GB/T 4697-2017 Hot rolled steel section for mine timbering
GB/T 4697-2017 Hot rolled steel section for mine timbering
Basic Information
Standard Code:
GB/T 4697-2017
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Steel shapes and special-shaped steel
ICS Name:
Steel sections
Publish Date:
2017-07-12
Implement Date:
2018-04-01
Pages:
13 pages
Scope
This standard specifies the ordering content, dimensions, shapes, weights, and allowable deviations of hot-rolled U-shaped steel and I-shaped steel for mine tunnel support, as well as technical requirements, test methods, inspection rules, packaging, marking, and quality certificates. This standard applies to the manufacture of hot-rolled U-shaped steel and I-shaped steel for mine tunnel support (hereinafter referred to as "section steel").
Development Information
Replace the following standards
Related Standards
GB 702-1986
Abolished
GB 702-1986 Hot-rolled round and square steels—Dimension, shape, weight and tolerance
GB/T 6723-1986
Replaced
GB/T 6723-1986 Cold forming sectional steel—Open sectional steel for general structure—Demension, form, weight and permissible deviations
GB/T 6726-1986
Replaced
GB/T 6726-1986 Cold forming sectional steel for cargo vehicle—Demension, form, weight and permissible deviations
GB/T 6727-1986
Replaced
GB/T 6727-1986 Cold forming sectional steel for passenger vehicle—Demension, form, weight and permissible deviations
GB/T 8649-1988
Abolished