GB/T 4227-1984
abolished_transferred
T/UNP 790-2025
Active
Group standards
T/UNP 790-2025 Technical specification for cold-rolled flat steel
T/UNP 790-2025 Technical specification for cold-rolled flat steel
Price:
$ 20.00
Basic Information
Standard Code:
T/UNP 790-2025
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Generally, it refers to microsurgical instruments
ICS Name:
Steel sections
Publish Date:
2025-07-23
Implement Date:
2025-07-23
Scope
This standard specifies the technical requirements for cold-rolled flat steel of high-quality carbon structural and alloy structural steels with a thickness of 1.5-10mm and a width of 8-100mm. It includes the classification and designations according to rolling accuracy, delivery state, and edge state; dimensional deviations (thickness, width, length), appearance (out-of-squareness, flatness, sickle bending), weight calculation; chemical composition of the grades (in accordance with GB/T 699 and 3077), smelting methods, mechanical properties (tensile strength, elongation, etc.); requirements for low-magnification microstructure and non-metallic inclusions, as well as testing methods, inspection rules, and packaging and transportation.
Development Information
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