The finished product inspection of wires and cables mainly includes three inspection items: appearance size and structure inspection, electrical performance inspection of wires and cables, and mechanical performance inspection of wires and cables. Wire and cable appearance size and structure inspection is the first inspection item for wire and cable quality control, which can be divided into appearance inspection, size inspection, and structure inspection. The appearance inspection of wires and cables is to ensure that their surface is round and smooth, without defects and impurities such as burrs, cracks, spots, oil stains that affect normal operation, and to ensure that their corrosion and oxidation levels meet the requirements. Size detection includes related tests such as outer diameter, thickness, eccentricity, sector height, pitch, cross-section, and density. Sampling is required to test the thickness of the insulation layer and the diameter of the wire diameter. The sampling method should take a sample of a section of wire at least 3 places with an interval of 1 meter, and then measure it with a micrometer. The insulation layer thickness of various wires and cables should not be less than relevant regulations, and the diameter error of various wire diameters should not be less than 1% of the nominal diameter. The structural inspection of wires and cables can be divided into section inspection, sheath inspection, cable core structure inspection, and insulation core inspection. Structural inspection is actually a final inspection that combines appearance inspection and size inspection, ensuring that there are no defects in the appearance and that the size is roughly correct
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