GB/T 24587-2025 Hot-rolled wire rods for prestressing steel bars of concrete English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 77.140.01
CCS H 57
National Standard of the People's Republic of China
GB/T 24587-2025
Replaces GB/T 24587-2009,GB/T 28899-2012
Hot-rolled wire rods for prestressing steel bars of concrete
Issue date: 2025-08-29 Implementation date: 2026-07-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Ordering Information
5 Manufacturing Process
6 Technical Requirements
References
Hot-rolled wire rods for prestressing steel bars of concrete
1 Scope
This document specifies ordering requirements, manufacturing processes, technical requirements, testing methods, inspection rules, packaging, marking, and quality certificates for hot-rolled wire rods used in prestressing steel bars of concrete (hereinafter referred to as "steel bar wire rods") and hot-rolled wire rods for cold-rolled ribbed steel bars (hereinafter referred to as "reinforcing wire rods").
2 Normative References
The following referenced documents contain provisions that are essential to this document through normative citations. For dated references, only the version cited applies. For undated references, the latest version (including all amendments) applies.
GB/T 222 Permissible deviations in finished chemical composition of steel
GB/T 223 (all parts) Chemical analysis methods for iron and steel
GB/T 224 Method for determination of decarburized layer depth in steel
GB/T 226 Acid-etching test for macrostructure and defects of steel
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature
GB/T 232 Metallic materials—Bend test method
GB/T 1979 Standard rating charts for low-magnification structure defects in structural steel
GB/T 2101 General rules for acceptance, packaging, marking, and quality certificates for section steel
GB/T 2975 Steel and steel products—Sampling location and preparation of test pieces for mechanical testing
GB/T 4336 Carbon and low-alloy steels—Determination of multi-element contents—Spark discharge atomic emission spectrometry (routine method)
GB/T 10561 Steel—Determination of non-metallic inclusion content—Standard rating charts for microscopic examination
GB/T 13298 Metallic materials—Microstructure examination methods
GB/T 14981—2009 Hot-rolled round wire rods—Dimensions, shape, weight, and permissible deviations
GB/T 20066 Steel and iron—Sampling and sample preparation for chemical analysis
GB/T 20123 Iron and steel—Determination of total carbon and sulfur content—Infrared absorption method after combustion in a high-frequency induction furnace (routine method)
YB/T 081 Rounding of numerical values in metallurgical technical standards and judgment of test results
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Hot-rolled wire rods for prestressing steel bars of concrete
Wire rods produced by hot rolling, typically with a circular cross-section, smooth surface, and intended for manufacturing prestressing steel bars for concrete.
Note: Abbreviated as "steel bar wire rods."
3.2 Wire rods for cold-rolled ribbed steel bars
Wire rods produced by hot rolling, typically with a circular cross-section, smooth surface, and used as raw material for cold-rolled ribbed steel bars.
Note: Abbreviated as "reinforcing wire rods."
4 Ordering Information
Contracts or orders placed in accordance with this document shall include the following:
a)Document number of this standard;
b)b) Product name;
c)c) Grade;
d)d) Specifications;
e)e) Dimensional accuracy class;
f)f) Weight (or quantity);
g)g) Delivery condition;
h)h) Other special requirements.
5 Manufacturing Process
5.1 Steelmaking Method
The steel shall be produced by converter or electric arc furnace. For steel bar wire rods, ladle refining shall also be performed.
5.2 Delivery Condition
Wire rods shall be delivered in hot-rolled condition. Upon agreement between the supplier and purchaser and specified in the contract, delivery in other conditions may be arranged.
6.1 Grade and Chemical Composition
6.1.1 Grade and Chemical Composition (Ladle Analysis) for Steel Bar Wire Rods
Shall comply with Table 1.
6.1.2 Grade and Chemical Composition (Ladle Analysis) for Reinforcing Wire Rods
Shall comply with Table 2.
6.1.3 Other Grades and Chemical compositions
Upon agreement between the supplier and purchaser and specified in the contract, wire rods with other grades and chemical compositions may be supplied.
6.1.4 Chemical Composition Allowable Deviations
When chemical analysis is performed on steel billets or wire rods, allowable deviations in chemical composition shall comply with GB/T 222.
Table 1 Grade and Chemical Composition for Steel Bar Wire Rods (to be filled per actual standard)
6.2 Mechanical and Technological Properties
6.2.1 Steel Bar Wire Rods
Tensile testing shall be conducted on steel bar wire rods, and ** tensile strength** and reduction of area values shall be provided.
Test results shall comply with Table 3.
For other grades, tensile performance requirements shall be agreed upon between the supplier and purchaser.
6.2.2 Reinforcing Wire Rods
Mechanical properties and bending performance (for wire rods with a diameter ≤12 mm) shall comply with Table 4.
Standard
GB/T 24587-2025 Hot-rolled wire rods for prestressing steel bars of concrete (English Version)
Standard No.
GB/T 24587-2025
Status
to be valid
Language
English
File Format
PDF
Word Count
5000 words
Price(USD)
150.0
Implemented on
2026-3-1
Delivery
via email in 1~3 business day
Detail of GB/T 24587-2025
Standard No.
GB/T 24587-2025
English Name
Hot-rolled wire rods for prestressing steel bars of concrete
GB/T 24587-2025 Hot-rolled wire rods for prestressing steel bars of concrete English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 77.140.01
CCS H 57
National Standard of the People's Republic of China
GB/T 24587-2025
Replaces GB/T 24587-2009,GB/T 28899-2012
Hot-rolled wire rods for prestressing steel bars of concrete
Issue date: 2025-08-29 Implementation date: 2026-07-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Ordering Information
5 Manufacturing Process
6 Technical Requirements
References
Hot-rolled wire rods for prestressing steel bars of concrete
1 Scope
This document specifies ordering requirements, manufacturing processes, technical requirements, testing methods, inspection rules, packaging, marking, and quality certificates for hot-rolled wire rods used in prestressing steel bars of concrete (hereinafter referred to as "steel bar wire rods") and hot-rolled wire rods for cold-rolled ribbed steel bars (hereinafter referred to as "reinforcing wire rods").
2 Normative References
The following referenced documents contain provisions that are essential to this document through normative citations. For dated references, only the version cited applies. For undated references, the latest version (including all amendments) applies.
GB/T 222 Permissible deviations in finished chemical composition of steel
GB/T 223 (all parts) Chemical analysis methods for iron and steel
GB/T 224 Method for determination of decarburized layer depth in steel
GB/T 226 Acid-etching test for macrostructure and defects of steel
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature
GB/T 232 Metallic materials—Bend test method
GB/T 1979 Standard rating charts for low-magnification structure defects in structural steel
GB/T 2101 General rules for acceptance, packaging, marking, and quality certificates for section steel
GB/T 2975 Steel and steel products—Sampling location and preparation of test pieces for mechanical testing
GB/T 4336 Carbon and low-alloy steels—Determination of multi-element contents—Spark discharge atomic emission spectrometry (routine method)
GB/T 10561 Steel—Determination of non-metallic inclusion content—Standard rating charts for microscopic examination
GB/T 13298 Metallic materials—Microstructure examination methods
GB/T 14981—2009 Hot-rolled round wire rods—Dimensions, shape, weight, and permissible deviations
GB/T 20066 Steel and iron—Sampling and sample preparation for chemical analysis
GB/T 20123 Iron and steel—Determination of total carbon and sulfur content—Infrared absorption method after combustion in a high-frequency induction furnace (routine method)
YB/T 081 Rounding of numerical values in metallurgical technical standards and judgment of test results
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Hot-rolled wire rods for prestressing steel bars of concrete
Wire rods produced by hot rolling, typically with a circular cross-section, smooth surface, and intended for manufacturing prestressing steel bars for concrete.
Note: Abbreviated as "steel bar wire rods."
3.2 Wire rods for cold-rolled ribbed steel bars
Wire rods produced by hot rolling, typically with a circular cross-section, smooth surface, and used as raw material for cold-rolled ribbed steel bars.
Note: Abbreviated as "reinforcing wire rods."
4 Ordering Information
Contracts or orders placed in accordance with this document shall include the following:
a)Document number of this standard;
b)b) Product name;
c)c) Grade;
d)d) Specifications;
e)e) Dimensional accuracy class;
f)f) Weight (or quantity);
g)g) Delivery condition;
h)h) Other special requirements.
5 Manufacturing Process
5.1 Steelmaking Method
The steel shall be produced by converter or electric arc furnace. For steel bar wire rods, ladle refining shall also be performed.
5.2 Delivery Condition
Wire rods shall be delivered in hot-rolled condition. Upon agreement between the supplier and purchaser and specified in the contract, delivery in other conditions may be arranged.
6.1 Grade and Chemical Composition
6.1.1 Grade and Chemical Composition (Ladle Analysis) for Steel Bar Wire Rods
Shall comply with Table 1.
6.1.2 Grade and Chemical Composition (Ladle Analysis) for Reinforcing Wire Rods
Shall comply with Table 2.
6.1.3 Other Grades and Chemical compositions
Upon agreement between the supplier and purchaser and specified in the contract, wire rods with other grades and chemical compositions may be supplied.
6.1.4 Chemical Composition Allowable Deviations
When chemical analysis is performed on steel billets or wire rods, allowable deviations in chemical composition shall comply with GB/T 222.
Table 1 Grade and Chemical Composition for Steel Bar Wire Rods (to be filled per actual standard)
6.2 Mechanical and Technological Properties
6.2.1 Steel Bar Wire Rods
Tensile testing shall be conducted on steel bar wire rods, and ** tensile strength** and reduction of area values shall be provided.
Test results shall comply with Table 3.
For other grades, tensile performance requirements shall be agreed upon between the supplier and purchaser.
6.2.2 Reinforcing Wire Rods
Mechanical properties and bending performance (for wire rods with a diameter ≤12 mm) shall comply with Table 4.
