Scope
This standard specifies the requirements, test methods, inspection rules and markings, packaging, transportation and storage, quality certificates, and purchase orders (or contracts) for electrical regenerated copper wire billets produced by pyrorefining and continuous casting and rolling using purple copper as raw material This standard is applicable to circular cross-section copper wire blanks with a diameter of 6.0 mm~35.0 mm for further drawing of electrical wire or other electrical copper conductors The following documents are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document GB/T 3048.2-2007 Electrical Performance Test Methods for Electric Wires and Cables, Part 2: Metal Material Resistivity Test
GB/T 3952-2008 Copper Wire Blanks for Electrical Purposes
GB/T 4909.2 Bare Wire Test Methods Part 2: Dimensional Measurement
GB/T 4909.3 Bare Wire Test Methods Part 3: Tensile Test
GB/T 4909.4 Bare Wire Test Methods Part 4: Torsion Test
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 problemsBaijian and 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 requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China