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.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 11263-2010 Hot-rolled H and Cut T Section Steel, and the following main changes have been made with respect to GB/T 11263-2010:
——The requirements of dimension and permissible shape deviation of H section steel in Table 3 are modified.
——The inspection item, sampling quantity and test method in Table 6 are modified.
——Annex A is adjusted to Annex E, and the content is modified.
——Annex B is adjusted to Annex F.
——Annex C is adjusted to Annex G, and the specification is modified.
——Annexes A, B, C and D are added.
This standard was proposed by the China Iron and Steel Association.
This standard is under the jurisdiction of the National Technical Committee on Iron and Steel of Standardization Administration of China (SAC/TC 183).
The previous editions of this standard are as follows:
——GB/T 11263-1998, GB/T 11263-2005 and GB/T 11263-2010.
Hot Rolled H and Cut T Section Steel
1 Scope
This standard specifies the order contents; classification and code; dimension, shape, weight and permissible deviation; technical requirements; test methods; inspection rules and packaging, marking and quality certificate of hot rolled H section steel and the T section steel cut by hot rolled H section steel.
This standard is applicable to hot rolled H section steel (hereinafter referred to as H section steel) and the T section steel cut by hot rolled H section steel.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 232 Metallic Materials - Bend Test
GB/T 700 Carbon Structural Steels
GB/T 712 Ship and Ocean Engineering Structural Steel
GB/T 714 Structural Steel for Bridge
GB/T 1591 High Strength Low Alloy Structural Steels
GB/T 2101 General Requirement of Acceptance Packaging, Marking and Certification for Section Steel
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for Mechanical Testing
GB/T 4171 Atmospheric Corrosion Resisting Structural Steel
GB/T 4336 Carbon and Low-alloy steel - Determination of Multi-element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 19879 Steel Plates for Building Structure
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the Determination of Chemical Composition
3 Order Contents
The order contracts concluded in accordance with this standard shall include the following technical contents:
a) Product name and type;
b) Designation;
c) Standard No.;
d) Specification;
e) Delivery length;
f) Weight and quantity;
g) Other special requirements proposed by the demander, such as special specification requirements and special surface quality requirements.
4 Classification and Code
4.1 H section steel is classified into four categories and their codes are as follows:
Wide flange H section steel HW (W is the initial of Wide);
Middle flange H section steel HM (M is the initial of Middle);
Narrow flange H section steel HN (N is the initial of Narrow);
Thin-wall H section steel HT (T is the initial of Thin).
4.2 The cut T section steel is classified into three categories and their codes are as follows:
Wide flange cut T section steel TW (W is the initial of Wide);
Middle flange cut T section steel TM (M is the initial of Middle);
Narrow flange cut T section steel TN (N is the initial of Narrow).
5 Dimension, Shape, Weight and Permissible Deviation
5.1 Dimension and expression methods
5.1.1 The sectional illustration of H and cut T section steel and marked symbols are shown in Figures 1 and 2.
Keys:
H——Height; t2——Flange thickness;
B——Width; r——Fillet radius.
t1——Web thickness;
Figure 1 Sectional Drawing for H Section Steel
Keys:
h——Height; t2——Flange thickness;
B——Width; r——Fillet radius;
t1——Web thickness; Cx——Center of gravity.
Figure 2 Sectional Drawing for Cut T Section Steel
5.1.2 The parameters of sectional dimension, sectional area, theoretical weight and sectional characteristics of H and cut T section steel shall meet the requirements of Tables 1 and 2 respectively. According to the demander's requirements, the products meeting the requirements of Annexes A to D and Annex G or other parameters may also be supplied upon the supplier and the demander's agreement. See Annex F for the table of the contrast of model and sectional characteristic parameters between I-steel and H section steel.
5.1.3 The delivery length of H section steel and cut T section steel shall be noted in the contract. Generally, the specified length is 12,000mm, and products with other specified length may also be supplied according to the demander's requirements.
Foreword ii
1 Scope
2 Normative References
3 Order Contents
4 Classification and Code
5 Dimension, Shape, Weight and Permissible Deviation
6 Technical Requirements
7 Test Method
8 Inspection Rules
9 Packaging, Marking and Quality Certificate
Annex A (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Hot Rolled H Section Steel
Annex B (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Hot Rolled H Section Steel
Annex C (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Hot Rolled H Section Steel
Annex D (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Hot rolled H Section Steel
Annex E (Informative) Supplement Rules for Repair Welding of Defects on Hot rolled H and Cut T Section Steel
Annex F (Informative) Contrast of Model and Sectional Characteristic Parameters between National Standard Hot Rolled I-steel and National Standard Hot Rolled H Section Steel
Annex G (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Super-thick and Super-heavy H Section Steel
Bibliography
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.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 11263-2010 Hot-rolled H and Cut T Section Steel, and the following main changes have been made with respect to GB/T 11263-2010:
——The requirements of dimension and permissible shape deviation of H section steel in Table 3 are modified.
——The inspection item, sampling quantity and test method in Table 6 are modified.
——Annex A is adjusted to Annex E, and the content is modified.
——Annex B is adjusted to Annex F.
——Annex C is adjusted to Annex G, and the specification is modified.
——Annexes A, B, C and D are added.
This standard was proposed by the China Iron and Steel Association.
This standard is under the jurisdiction of the National Technical Committee on Iron and Steel of Standardization Administration of China (SAC/TC 183).
The previous editions of this standard are as follows:
——GB/T 11263-1998, GB/T 11263-2005 and GB/T 11263-2010.
Hot Rolled H and Cut T Section Steel
1 Scope
This standard specifies the order contents; classification and code; dimension, shape, weight and permissible deviation; technical requirements; test methods; inspection rules and packaging, marking and quality certificate of hot rolled H section steel and the T section steel cut by hot rolled H section steel.
This standard is applicable to hot rolled H section steel (hereinafter referred to as H section steel) and the T section steel cut by hot rolled H section steel.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 232 Metallic Materials - Bend Test
GB/T 700 Carbon Structural Steels
GB/T 712 Ship and Ocean Engineering Structural Steel
GB/T 714 Structural Steel for Bridge
GB/T 1591 High Strength Low Alloy Structural Steels
GB/T 2101 General Requirement of Acceptance Packaging, Marking and Certification for Section Steel
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for Mechanical Testing
GB/T 4171 Atmospheric Corrosion Resisting Structural Steel
GB/T 4336 Carbon and Low-alloy steel - Determination of Multi-element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 19879 Steel Plates for Building Structure
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the Determination of Chemical Composition
3 Order Contents
The order contracts concluded in accordance with this standard shall include the following technical contents:
a) Product name and type;
b) Designation;
c) Standard No.;
d) Specification;
e) Delivery length;
f) Weight and quantity;
g) Other special requirements proposed by the demander, such as special specification requirements and special surface quality requirements.
4 Classification and Code
4.1 H section steel is classified into four categories and their codes are as follows:
Wide flange H section steel HW (W is the initial of Wide);
Middle flange H section steel HM (M is the initial of Middle);
Narrow flange H section steel HN (N is the initial of Narrow);
Thin-wall H section steel HT (T is the initial of Thin).
4.2 The cut T section steel is classified into three categories and their codes are as follows:
Wide flange cut T section steel TW (W is the initial of Wide);
Middle flange cut T section steel TM (M is the initial of Middle);
Narrow flange cut T section steel TN (N is the initial of Narrow).
5 Dimension, Shape, Weight and Permissible Deviation
5.1 Dimension and expression methods
5.1.1 The sectional illustration of H and cut T section steel and marked symbols are shown in Figures 1 and 2.
Keys:
H——Height; t2——Flange thickness;
B——Width; r——Fillet radius.
t1——Web thickness;
Figure 1 Sectional Drawing for H Section Steel
Keys:
h——Height; t2——Flange thickness;
B——Width; r——Fillet radius;
t1——Web thickness; Cx——Center of gravity.
Figure 2 Sectional Drawing for Cut T Section Steel
5.1.2 The parameters of sectional dimension, sectional area, theoretical weight and sectional characteristics of H and cut T section steel shall meet the requirements of Tables 1 and 2 respectively. According to the demander's requirements, the products meeting the requirements of Annexes A to D and Annex G or other parameters may also be supplied upon the supplier and the demander's agreement. See Annex F for the table of the contrast of model and sectional characteristic parameters between I-steel and H section steel.
5.1.3 The delivery length of H section steel and cut T section steel shall be noted in the contract. Generally, the specified length is 12,000mm, and products with other specified length may also be supplied according to the demander's requirements.
Contents of GB/T 11263-2017
Foreword ii
1 Scope
2 Normative References
3 Order Contents
4 Classification and Code
5 Dimension, Shape, Weight and Permissible Deviation
6 Technical Requirements
7 Test Method
8 Inspection Rules
9 Packaging, Marking and Quality Certificate
Annex A (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Hot Rolled H Section Steel
Annex B (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Hot Rolled H Section Steel
Annex C (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Hot Rolled H Section Steel
Annex D (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Hot rolled H Section Steel
Annex E (Informative) Supplement Rules for Repair Welding of Defects on Hot rolled H and Cut T Section Steel
Annex F (Informative) Contrast of Model and Sectional Characteristic Parameters between National Standard Hot Rolled I-steel and National Standard Hot Rolled H Section Steel
Annex G (Informative) Sectional Dimension, Sectional Area, Theoretical Weight and Sectional Characteristics of Super-thick and Super-heavy H Section Steel
Bibliography
