This standard specifies the terms and definitions, classification, designation, order contents, dimension, shape, weight and permissible deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of hot rolled ribbed bars for the reinforcement of concrete (hereinafter referred to as ribbed bars).
This part is applicable to ordinary hot-rolled ribbed bars and fine-grained hot-rolled ribbed bars for the reinforcement of concrete.
This part is not applicable to regenerated ribbed bars and residual heat-treated ribbed bars produced from finished products.
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 of the referenced document (including any amendments) applies.
GB/T 222 Permissible Deviations 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 223.11 Iron, Steel and Alloy — Determination of Chromium Content - Visual Titration or Potentiometric Titration Method
GB/T 223.12 Methods for Chemical Analysis of Iron, Steel and Alloy — The Sodium Carbonate Separation-diphenyl Carbazide Photometric Method for the Determination of Chromium Content
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 223.19 Methods for Chemical Analysis of Iron Steel and Alloy — The Neocuproine-Chloroform Extraction Photometric Method for the Determination of Copper Content
GB/T 223.23 Methods for Chemical Analysis of Iron, Steel and Alloy — The Dimethylglyoxime Spectrophotometric Method
GB/T 223.26 Iron Steel and Alloy — Determination of Molybdenum Content — The Thiocyanate Spectrophotometric Method
GB/T 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy — Indophenol Blue Photometric Method for the Determination of Nitrogen Content after Distillation Separation
GB/T 223.40 Iron Steel and Alloy — Determination of Molybdenum Content by the Sulphochlorophenol S Spectrophotometric Method
GB/T 223.59 Iron Steel and Alloy — Determination of Molybdenum 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 4340.1 Metallic Materials — Vickers Hardness Test — Part 1: Test Method
GB/T 6394 Determination of Estimating the Average Grain Size of Metal
GB/T 13298 Inspection Methods of Microstructure for Metals
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 20124 Steel and Iron — Determination of Nitrogen Content — Thermal Conductimetric Method after Fusion in a Current of Inert Gas (Routine Method)
GB/T 1499.2-2018 The following standards are cited：
GB/T 1499.2-2018 Cited by the following standards：
