KPMG testing

This standard specifies the terms and definitions, classification, grade, code, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, markings, packaging, and quality certificates of hot-rolled recycled steel bars (hereinafter referred to as steel bars). This standard is applicable to concrete structures of general low rise buildings that are not seismic fortification, as well as concrete structural columns of low rise and multi story buildings that are seismic fortification below 8 degrees: secondary components of other engineering structures, or structural reinforcement where the design does not require full play to the strength and deformation of steel bars. It is not suitable for concrete structures and structures that bear dynamic loads in mid to high-rise, high-rise, and super high-rise buildings, nor is it suitable for lifting rings of embedded parts and prefabricated components. The steel bars specified in this standard should not be used as raw materials for cold drawn steel bars. Note: The definition of low rise, multi story, medium to high rise, and high-rise buildings is the same as that of GB 50352.2 normative references. The clauses in the following documents are referred to in this standard and become the clauses of this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T 700-2006 Carbon Structural Steels GB/T 222 Permissible Variations in Chemical Composition of Finished Steels GB/T 223.5, Methods for Chemical Analysis of Iron, Steel, and Alloy - Determination of Acid Soluble Silicon Content - Reduced Molybdenum Silicate Photometric Method GB/T 223.59, Methods for Chemical Analysis of Iron, Steel, and Alloy - Determination of Phosphorus Content - Antimony Phosphorus Molybdenum Blue Photometric Method GB/T 223.63, Methods for Chemical Analysis of Iron, Steel, and Alloy - Sodium (Potassium) Periodate Photometric Determination of Manganese Content GB/T 223.68 Methods for Chemical Analysis of Iron, Steel, and Alloy GB/T 223.69 Methods for Chemical Analysis of Iron, Steel, and Alloy Determination of Sulfur Content after Combustion in a Tubular Furnace Potassium Iodate Titration Method GB/T 223.69 Methods for Gas Volume Determination of Carbon Content after Combustion in a Tubular Furnace GB/T 228 Method for Room Temperature Tensile Testing of Metallic Materials (GB/T 228-2002, eqv IS0 6892:1998 (E)) GB/T 232 Method for Bend Testing of Metallic Materials (GB/T 232-1999, eqv ISO 7438:1985 (E) ）GB 1499.1-2008 Steel for the Reinforcement of Concrete Part 1: Hot Rolled Plain Round Bars GB 1499.2-2007 Steel for the Reinforcement of Concrete Part 2: Hot Rolled Ribbed Bars GB/T 1591-2008 Low Alloy High Strength Structural Steels GB/T 2101 Acceptance, Packaging General provisions for markings and quality certificates GB 2975-1998 Sampling locations and sample preparation for mechanical properties testing of steel and steel products GB/T 4336 Method for photoelectric emission spectroscopy analysis of carbon steel and medium and low alloy steel GB 50352-2005 General principles for design of civil buildings (with explanation of provisions) GB/T 20066 Sampling and sample preparation methods for determination of chemical composition of steel and iron (GB/T 20066-2006/IS0 14284:1998, IDT) wB1002-1995 Shipboard hot-rolled recycled steel bars

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

BAIJIAN testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

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8. The testing report is authoritative and effective, and is generally used in China