GB/T 4227-1984
abolished_transferred
GB/T 41749-2022
Active
National standards
GB/T 41749-2022 General requirements for surface condition of hot-rolled sections
GB/T 41749-2022 General requirements for surface condition of hot-rolled sections
Price:
$ 54
Basic Information
Standard Code:
GB/T 41749-2022
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:
2022-10-12
Implement Date:
2022-10-12
Pages:
11 pages
Scope
This document specifies the surface quality classification, measurement rules, grinding requirements, welding repair and inspection rules, and numerical rounding for hot-rolled steel shapes. This document is applicable to the surface quality of hot-rolled H-beams, split T-beams, hot-rolled equal-sided angle steels, hot-rolled unequal-sided angle steels, hot-rolled L-beams, hot-rolled I-beams, and hot-rolled channel steels with a nominal thickness between 3 mm and 160 mm (hereinafter referred to as "steel shapes"), where the surface includes all surfaces except the rolled edges.
Development Information
Referenced Standards
Adopt standards
ISO 20723:2004
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