GB/T 43665-2024Hot rolled bars of rare earth for reinforcement of concrete (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part

1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Iron and Steel Association. This document is under the jurisdiction of the National Technical Committee on Steel Standardization (SAC/TC183). This document was drafted by: Yancheng Lianxin Steel Co., Ltd., Guangxi Shenglong Metallurgical Co., Ltd., Jiangsu Yonggang Group Co., Ltd., Metallurgical Industrial Information Standards Research Institute, Tongling Fuxin Steel Co., Ltd., Shiheng Special Steel Group Co., Ltd., Chengdu Metallurgical Experimental Plant Co., Ltd., Hu Beijin Shenglan Metallurgical Technology Co., Ltd., Lianyungang Xingxin Steel Co., Ltd., Shanghai University, Jiangxi Taixin Steel Co., Ltd., Jiangsu Binxin Iron and Steel Group Co., Ltd., Yangchun New Iron and Steel Co., Ltd., Benxi Beiying Iron and Steel (Group) Co., Ltd., CITIC Metal Co., Ltd. Company, Shougang Group Co., Ltd., Sichuan Desheng Group Vanadium Titanium Co., Ltd., Anhui Nuotai Engineering Technology Co., Ltd., Quzhou Yuanli Metal Products Co., Ltd., China Steel Shijiazhuang Engineering Design and Research Institute Co., Ltd., and Steel Research Institute Shenghua Technology Co., Ltd. The main drafters of this document are. Dong Han, Wang Changcheng, Ke Xueli, Xie Jixiang, Liu Baoshi, Ma Zhenghong, Kuang Yonghai, An Zengchao, Wang Yujie, Wang Kaijian, Yang Yong, Wang Yuanting, Lu Hengchang, Dong Jianlin, Lin Tao, Fan Yaogui, Wang Yunguo, Zhang Yongqing, Zhou Yuli, Wu Qiang, Huang Yuhong, Zhang Huilin, Fan Zengwei, Zhou Hemin, Chen Lisheng, Chen Xiaoping, Liu Liangqing, Hou Xinghui, Wang Changsheng, Zhou Zhisuo, Guo Xueyu, Zheng Guizeng, Xu Haochi, Deng Keling, Zhang Baomin, Peng Canfeng, Li Yan, Luo Yi, Di Quankang, Deng Cheng, Liu Shen, Su Ni, Hua Zheng, Li Xuezhao, Shen Pengfei. Hot rolled rare earth steel bars for reinforced concrete

1 Scope

This document specifies the classification and grade, order information, dimension, shape, weight and permissible deviation, technical requirements, test methods, inspection rules, and packaging, marking and quality certification of hot rolled bars of rare earth for reinforcement of concrete.

This document applies to hot rolled plain round bars and ribbed bars of rare earth for reinforcement of concrete (hereinafter referred to as steel bars).

2 Normative references

The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, 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 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method

GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content

GB/T 223.37 Iron, steel and alloy - Determination of nitrogen content - Indophenol blue spectrophotometric method after distillation separation

GB/T 223.40 Iron, steel and alloy - Determination of niobium content by the sulphochlorophenol S spectrophotometric method

GB/T 223.49 Methods for chemical analysis of iron, steel and alloy - Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare tarth content

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 Iron, steel and alloy - Determination of manganese content - Sodium (potassium) periodate spectrophotometric method

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 1499.1 Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars

GB/T 1499.2 Steel for the reinforcement of concrete - Part 2: Hot rolled ribbed bars

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 10125 Corrosion tests in artificial atmospheres - Salt spray tests

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

3 Terms and definitions

For the purposes of this document, the terms and definitions specified in GB/T 1499.1 and GB/T 1499.2 and the following apply.

4 Classification and designation

4.1 According to the characteristic value of yield strength, steel bars are divided into Grade 300 grades, Grade 400, Grade 500, and Grade 600.

4.2 See Table 1 for the composition and meaning of steel bar grades.

Contents of GB/T 43665-2024 Contents Foreword i

10 Packaging, marking and quality certification

Referred in GB/T 43665-2024:

GB/T 222-2006 Permissible Tolerances for Chemical Composition of Steel Products *

GB/T 223.5-2008 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method *

GB/T 223.14-2000 Methods for Chemical Analysis of Iron, Steel and Alloy - The N-Benzoy-N-Phenylhydroxylamine Extraction Photometric Method for the Determination of Vanadium Content *

GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation *

GB/T 223.40-2007 Iron, Steel and Alloy - Determination of Niobium Content by the Sulphochlorophenol S Spectrophotometric Method *

GB/T 223.49-1994 Methods for chemical analysis of iron, steel and alloy Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content *

GB/T 223.59-2008 Iron, Steel and Alloy - Determination of Phosphorus Content - Bismuth Phosphomolybdate Blue Spectrophotometric Method and Antimony Phosphomolybdate Blue Spectrophotometric Method *

GB/T 223.63-2022 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method *

GB/T 223.85-2009 Steel and iron—Determination of sulfur content—Infrared absorption method after combustion in an induction furnace *

GB/T 223.86-2009 Steel and iron—Determination of total carbon content—Infrared absorption method after combustion in an induction furnace *

GB/T 1499.1-2017 Steel for the reinforcement of concrete—Part 1:Hot rolled plain bars *

GB/T 1499.2-2018 Steel for the reinforcement of concrete—Part 2:Hot rolled ribbed bars *

GB/T 2101-2017 General requirement of acceptance, packaging, marking and certification for section steel *

GB/T 4336-2016/XG1-2017 Carbon and low-alloy steel-Determination of multi-element contents-Spark discharge atomic emission spectrometric method (routine method), includes Amendment 1 *

GB/T 10125-2021 Corrosion tests in artificial atmospheres—Salt spray tests *

GB/T 17505-2016 Steel and steel products General technical delivery requirements *

GB/T 20066-2006 Steel and Iron-Sampling and Preparation of Samples for the Determination of Chemical Composition *

10 Packaging, marking and quality certification