GBT_3274-2007 英文版.doc

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1、GBNational Standard of the Peoples Republic of ChinaGB/T 3274-2007Replace GB/T 3274-1988Hot-rolled Plates and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels碳素结构钢和低合金结构钢热轧厚钢板和钢带Issue on August 14, 2007Implemented on March 1, 2008Issued by: General Administration of Q

2、uality Supervision, Inspection and Quarantine of the Peoples Republic of China (GAQSIQ) and Standardization Administration of the Peoples Republic of China (SAC)ForewordThis standard is not equivalent to ISO 630: 1995 Structural Steel and ISO 13976:2005 Hot-rolled Steel Sheet in Coils of Structural

3、Quality and Heavy Thickness. This standard will replace GB/T 3274-1998 Hot-rolled Plates and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels. Compared with the original standard, the following main amendments are made: - GB/T 14977 and GB/T 18253 are supplemented int

4、o the normative reference; - ordering content is supplemented; - Provisions of surface quality are modified; - Provisions of weld repair are supplemented; - Group and batch provisions are modified. This standard was proposed by China Iron and Steel Association. This standard is under jurisdiction of

5、 National Technical Standardization Committee. this standard was drafted by Angang Steel Company Limited, Tianjin Iron & Steel Co., Ltd., China Metallurgical Information & Standardization Institute and Jinan Iron & Steel Co., Ltd. This standard was prepared by Liu Xuyuan, Wang Xiaohu, Xu Keliang, Pu

6、 Zhimin, Wu Bo, Sun Genling and Tang YifanThe standard is initially issued in 1988.Hot-rolled Plates and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels1 ScopeThe standard specifies the content, size, form, weight, permissible tolerance, technical conditions, experim

7、ent, checking rules, packaging, label and quality certification of hot-rolled steel plate and strip of carbon structural steel and low-alloy structural steel. This standard is applicable to 3mm- 400mm thick hot-rolled steel plate or 3mm- 245mm thick hot-rolled steel strip of carbon structural steel

8、and low-alloy structural steel. 2 Normative ReferencesThe following standards contain provisions which, through reference in this text, constitute provisions of this standard. As for dated reference, subsequent amendments (excluding amend error) to, or revisions of, any of these publications do not

9、apply. For undated references, the latest edition of the normative document referred to applies. GB/T 222 Permissible Tolerances for Chemical Composition of Steel ProductsGB/T 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy - the Diantipyrylmethane Phosphomolybdate Gravimetric Method fo

10、r the Determination of Phosphorus ContentGB/T 223.5 Methods for Chemical Analysis of Iron, Steel and Alloy - the Reduced Molybdosilicate Spectrophotometric Method for the Determination of Acid-soluble Silicon Content GB/T 223.10 Methods for Chemical Analysis of Iron, steel and Alloy - the Cupferron

11、Separation-chrome Azurol S PhotGB/T 223.11 Methods for Chemical Analysis of Iron, Steel and Alloy - the Ammonium Persulfate Oxidation VolumetricGB/T 223.14 Methods for Chemical Analysis of Iron, steel and Alloy - the N-benzoyl-n-phenylhydroxylamine ExtractioGB/T 223.17 Methods for Chemical Analysis

12、of Iron, Steel and Alloy - the Diantipyrylmethane Photometric Method for the Determination of Titanium ContentGB/T 223.18 Methods for Chemical Analysis of Iron Steel and Alloy - the Sodium Thiosulfate Separation Iodimetric Method for the Determination of Cupper ContentGB/T 223.19 Methods for Chemica

13、l Analysis of Iron, Steel and Alloy-the Neocuproine-chloroform Extraction Photometric Method for the Determination of Copper ContentGB/T 223.23 Methods for Chemical Analysis of Iron, Steel and Alloy- the Dimethylglyoxime Spectrophotometric Method for the Determination of Nickel ContentGB/T 223.24 Me

14、thods for Chemical Analysisof Iron, steel and Alloy - the Extraction Separation-the Dimethylglyoxime Spectrophotometric Method for The Determination of Nickel ContentGB/T 223.32 Methods for Chemical Analysis of Iron, Steel and Alloy - the Hypophosphite Reduction-iodimetric Method for the Determinati

15、on of Arsenic ContentGB/T 223.37 Methods for Chemical Analysis of Iron, steel and Alloy - the Indophenol Blue Photometric Methods for the Determination of Nitrogen Content after Distillation SeparationGB/T 223.40 Methods for Chemical Analysis of Iron, steel and Alloy - the Anion-exchange Separation-

16、sulphochlorophenol S Photometric Method for the Determination of Niobium ContentGB/T 223.58 Methods for Chemical Analysis of Iron, steel and Alloy-the Sodium Arsenite-sodium Nitrite Titrimetric Method for the Determination of Manganese ContentGB/T 223.59 Methods for Chemical Analysis of Iron, steel and Alloy-the Reduced Molybdoantimo