Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 1499 Steel for the reinforcement of concrete is divided into three parts:
——Part 1: Hot-rolled light round bar;
——Part 2: Hot rolled ribbed steel;
——Part 3: Reinforced welded mesh.
This is part 1 of GB/T 1499
This standard is drafted in accordance with the rules given in GB/T 1.1-2009
This part replaces GB/T 1499.1-2008 Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars. The following main changes have been made with respect to GB/T 1499.1-2008:
——some normative references are added;
——designation HPB235 and related technical requirements are deleted;
——the upper limit of S element content is adjusted to 0.045%, and the technical requirements for residual elements in steel are deleted;
——products with a specification of 6.5 mm and related technical requirements are deleted;
——requirements for the curvature per meter of straight bar reinforcement are added;
——stricter requirements are set for the mass deviation;
——measurement requirements where yield strength is not evident are added;
——the requirement that re-inspection is not permitted in case mass deviation is rejected is added;
——surface markings such as embossed manufacturer name may be added on the surface of rebar
——Annex A (Normative) “Determination method for the total elongation of rebar at maximum force” is deleted
This standard is redrafted by reference to ISO 6935-1:2007 Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars for preparation, and is not equivalent to it.
This standard was proposed by the China Iron and Steel Association.
This standard is under the jurisdiction of SAC/TC 183 National Technical Committee on Iron and Steel of Standardization Administration of China.
The previous editions of this standard are as follows:
——GB 1499-1979, and GB 1499-1984;
——GB 13013-1991;
——GB/T 1499.1-2008
Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars
1 Scope
This part of GB/T 1499 specifies the terms and definitions, designation, ordering contents, dimensions, shapes, masses, permissible deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of the hot rolled plain bars for the reinforcement of concrete (hereinafter referred to as "steel bars").
This part is applicable to hot-rolled straight bars and coiled plain bars for reinforced concrete.
This part is not applicable to recycled steel bars re-rolled from finished steel.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.59 Iron steel and alloy - Determination of phosphorus content - Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium (potassium) periodate photometric method for the determination of manganese content
GB/T 223.85 Steel and iron - Determination of sulfur content - Infrared absorption method after combustion in an induction furnace
GB/T 223.86 Steel and iron - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace
GB/T 2101 General requirement of acceptance, packaging, marking and certification for section steel
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 17505 Steel and steel products - General technical delivery requirements
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 28900 Test methods of steel for reinforcement of concrete
YB/T 081 Rounding off of numerical values and judgement of testing values for technical standards of metallurgy
3 Terms and definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
hot rolled plain bars
hot-rolled finished steel bars with a generally round cross section and a smooth surface
3.2
characteristic value
the percentile value corresponding to a prescribed probability in a hypothetical unlimited test series
4 Designation
4.1 The characteristic value of yield strength of the steel bar shall be 300Mpa.
4.2 The composition and meaning of steel designation are shown in Table 1.
Table 1
Product name Designation Composition The meaning of the English alphabet
Hot rolled plain bars HPB300 Composed of HPB+ characteristic value of yield strength HPB—Abbreviation of Hot-rolled Plain Bars
5 Order contents
Order contracts as per this standard shall include at least the following:
a) number of this standard;
b) product name;
c) steel bar designation;
d) steel nominal diameter, length and mass (or quantity, mass per roll); and
e) special requirements.
6 Dimensions, shapes, masses and permissible deviations
6.1 Nominal diameter range and recommended diameter
The nominal diameter range of steel bars is 6 mm to 22 mm. The recommended nominal diameters of steel bars are 6 mm, 8 mm, 10 mm, 12 mm, 16 mm, and 20 mm.
6.2 Nominal cross-sectional area and theoretical mass
The nominal cross-sectional area and theoretical mass of the steel bars are given in Table 2.
Foreword i 1 Scope １ 2 Normative references １ 3 Terms and definitions ２ 4 Designation ２ 5 Order contents ３ 6 Dimensions, shapes, masses and permissible deviations ３ 7 Technical requirements ５ 8 Test methods ７ 9 Inspection rules ８ 10 Packaging, marking and quality certificate ９ Annex A (Normative) Characteristic value inspection rules １０
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 1499 Steel for the reinforcement of concrete is divided into three parts:
——Part 1: Hot-rolled light round bar;
——Part 2: Hot rolled ribbed steel;
——Part 3: Reinforced welded mesh.
This is part 1 of GB/T 1499
This standard is drafted in accordance with the rules given in GB/T 1.1-2009
This part replaces GB/T 1499.1-2008 Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars. The following main changes have been made with respect to GB/T 1499.1-2008:
——some normative references are added;
——designation HPB235 and related technical requirements are deleted;
——the upper limit of S element content is adjusted to 0.045%, and the technical requirements for residual elements in steel are deleted;
——products with a specification of 6.5 mm and related technical requirements are deleted;
——requirements for the curvature per meter of straight bar reinforcement are added;
——stricter requirements are set for the mass deviation;
——measurement requirements where yield strength is not evident are added;
——the requirement that re-inspection is not permitted in case mass deviation is rejected is added;
——surface markings such as embossed manufacturer name may be added on the surface of rebar
——Annex A (Normative) “Determination method for the total elongation of rebar at maximum force” is deleted
This standard is redrafted by reference to ISO 6935-1:2007 Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars for preparation, and is not equivalent to it.
This standard was proposed by the China Iron and Steel Association.
This standard is under the jurisdiction of SAC/TC 183 National Technical Committee on Iron and Steel of Standardization Administration of China.
The previous editions of this standard are as follows:
——GB 1499-1979, and GB 1499-1984;
——GB 13013-1991;
——GB/T 1499.1-2008
Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars
1 Scope
This part of GB/T 1499 specifies the terms and definitions, designation, ordering contents, dimensions, shapes, masses, permissible deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of the hot rolled plain bars for the reinforcement of concrete (hereinafter referred to as "steel bars").
This part is applicable to hot-rolled straight bars and coiled plain bars for reinforced concrete.
This part is not applicable to recycled steel bars re-rolled from finished steel.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.59 Iron steel and alloy - Determination of phosphorus content - Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium (potassium) periodate photometric method for the determination of manganese content
GB/T 223.85 Steel and iron - Determination of sulfur content - Infrared absorption method after combustion in an induction furnace
GB/T 223.86 Steel and iron - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace
GB/T 2101 General requirement of acceptance, packaging, marking and certification for section steel
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 17505 Steel and steel products - General technical delivery requirements
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 20125 Low-alloy steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method
GB/T 28900 Test methods of steel for reinforcement of concrete
YB/T 081 Rounding off of numerical values and judgement of testing values for technical standards of metallurgy
3 Terms and definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
hot rolled plain bars
hot-rolled finished steel bars with a generally round cross section and a smooth surface
3.2
characteristic value
the percentile value corresponding to a prescribed probability in a hypothetical unlimited test series
4 Designation
4.1 The characteristic value of yield strength of the steel bar shall be 300Mpa.
4.2 The composition and meaning of steel designation are shown in Table 1.
Table 1
Product name Designation Composition The meaning of the English alphabet
Hot rolled plain bars HPB300 Composed of HPB+ characteristic value of yield strength HPB—Abbreviation of Hot-rolled Plain Bars
5 Order contents
Order contracts as per this standard shall include at least the following:
a) number of this standard;
b) product name;
c) steel bar designation;
d) steel nominal diameter, length and mass (or quantity, mass per roll); and
e) special requirements.
6 Dimensions, shapes, masses and permissible deviations
6.1 Nominal diameter range and recommended diameter
The nominal diameter range of steel bars is 6 mm to 22 mm. The recommended nominal diameters of steel bars are 6 mm, 8 mm, 10 mm, 12 mm, 16 mm, and 20 mm.
6.2 Nominal cross-sectional area and theoretical mass
The nominal cross-sectional area and theoretical mass of the steel bars are given in Table 2.
Contents of GB/T 1499.1-2017
Foreword i
1 Scope １
2 Normative references １
3 Terms and definitions ２
4 Designation ２
5 Order contents ３
6 Dimensions, shapes, masses and permissible deviations ３
7 Technical requirements ５
8 Test methods ７
9 Inspection rules ８
10 Packaging, marking and quality certificate ９
Annex A (Normative) Characteristic value inspection rules １０
