The control cable testing project GB/T9330-2020 divides control cable testing projects into six categories, namely structural dimensions, electrical performance, insulation mechanical and physical properties, sheath mechanical and physical properties, combustion performance, and standards. The specific inspection items are as follows: structural dimensions: conductor structural dimensions inspection, insulation thickness measurement, sheath thickness measurement, cable stranding pitch and stranding direction inspection, shielding layer structural dimensions inspection, inner lining layer structural dimensions inspection, armor layer structural dimensions inspection, outer diameter measurement, etc. Electrical performance: conductor DC resistance measurement, drainage line DC resistance measurement, finished cable voltage test, insulation core voltage test, insulation resistance measurement at working temperature, etc Mechanical and physical properties of insulation: tensile test before aging, tensile test after air box aging, non pollution test, weight loss test, high-temperature pressure test, thermal shock test, thermal extension test, water absorption test, shrinkage test, low-temperature test, etc. Mechanical and physical properties of the sheath: tensile test before aging, tensile test after air box aging, non pollution test, weight loss test, high temperature pressure test, thermal shock test, water absorption test, shrinkage test, low temperature test, carbon black content, etc. Combustion performance: single combustion test for finished cables, bundle combustion test for finished cables, acid gas content test, value and conductivity test, fluorine content test, smoke density test, fire resistance test, etc. Mark detection: finished cable marks, insulated wire cores, etc. Other tests: working temperature, rated voltage of cable, ambient temperature of cable laying, allowable bending radius of cable, etc
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