GB/T 4227-1984
abolished_transferred
GB/T 6728-2025
Active
National standards
GB/T 6728-2025 Cold forming sectional steel for general structure
GB/T 6728-2025 Cold forming sectional steel for general structure
Price:
$ 243
Basic Information
Standard Code:
GB/T 6728-2025
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:
2025-08-29
Implement Date:
2026-03-01
Pages:
112 pages
Scope
This document specifies the ordering content, classification, code, technical requirements, inspection rules, packaging, marking, transportation, storage, and quality certificates of structural cold-bent steel (hereinafter referred to as "steel section"), and describes the corresponding test methods.
This document is applicable to general cold-bent open-section steel (hereinafter referred to as "open-section steel"), round, rectangular, and square cold-bent closed-section steel (hereinafter referred to as "closed-section steel") produced by continuous roll cold-bending units from cold-rolled or hot-rolled steel plates and steel strips, and also applicable to continuous hot-dip galvanized steel sections (hereinafter referred to as "galvanized steel sections").
This document is not applicable to steel sections formed by cold-bending and welding of galvanized steel plates and steel strips.
Development Information
Replace the following standards
Referenced Standards
GB/T 222-1984 Method of sampling steel for determination of chemical composition and permissible variations for product analysis
GB/T 222-2006 Permissible tolerances for chemical composition of steel products
GB/T 222-2025 Steels and alloys—Permissible deviations of product analyzed chemical composition
GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature
GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature
GB/T 229-1994 Metallic materials—Charpy notch impact test
GB/T 229-2007 Metallic materials—Charpy pendulum impact test method
GB/T 229-2020 Metallic materials—Charpy pendulum impact test method
GB/T 470-2008 Zinc ingots
GB/T 699-1999 Quality carbon structural steels
GB/T 699-2015 Quality carbon structure steels
GB/T 700-1988 Carbon structural steels
GB/T 700-2006 Carbon structural steels
GB/T 709-1988 Dimensions, shape, weight and tolerances for hot-rolled plates and sheets
GB/T 709-2006 Dimension,shape,weight and tolerances for hot-rolled steel plates and sheets
GB/T 709-2019 Dimension,shape,weight and tolerance for hot-rolled steel strip,plate and sheet
GB/T 714-2000 Structural steel for bridge
GB/T 714-2008 Structural steel for bridge
GB/T 714-2015 Structural steel for bridge
GB/T 1591-1994 High strength low alloy structural steels
GB/T 1591-2008 High strength low alloy structural steels
GB/T 1591-2018 High strength low alloy structural steels
GB/T 2101-1989 General requirements of acceptance, packaging, marking and certification for section steel
GB/T 2101-2008 General requirement of acceptance,packaging,marking,and certification for section steel
GB/T 2101-2017 General requirement of acceptance,packaging,marking and certification for section steel
GB/T 2102-1988 Acceptance, packing, marking, and certification of pipe
GB/T 2102-2006 Acceptance, packing, marking and quality certification of steel pipe
GB/T 2102-2022 Acceptance,packaging,marking and quality certification for steel tubular products
GB/T 2975-1998 Steel and steel products—Location and preparation of test pieces for mechanical testing
GB/T 2975-2018 Steel and steel products—Location and preparation of samples and test pieces for mechanical testing
GB/T 3280-1992 Cold rolled stainless steel sheets and plates
GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip
GB/T 3280-2015 Cold rolled stainless steel plate, sheet and strip
GB/T 4171-2000 Superior atmospheric corrosion resisting structural steel
GB/T 4171-2008 Atmospheric corrosion resisting structural steel
GB/T 8170-1987 Rules for rounding off of numberical values
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 20066-2006 Steel and iron—Sampling and preparation of samples for the determination of chemical composition
GB/T 20878-2007 Stainless and heat-resisting steels—Designation and chemical composition
GB/T 20878-2024 Stainless steels—Designation and chemical composition
GB/T 33162-2016 Continuously hot-rolled steel sheet and strip for cold-forming steel sections
GB/T 714-2025 Structural steel for bridge
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