Tunnel inspection is an essential inspection content in the construction process of tunnel engineering. Due to the significant impact of tunnel construction on the surrounding environment, especially for some special geological conditions, if not strictly tested, it is likely to cause major accidents. So tunnel detection is a very important task that requires our attention. Tunnel inspection items: 1. Material quality inspection: steel support spacing, lining thickness, steel bar spacing within the lining, anchor rod inspection, etc. 2. Construction inspection: During the construction process, inspection: quality of initial support and secondary lining; Section size; Invert quality; Advance geological prediction; Construction monitoring: slopes, tunnels; Operation tunnel inspection: regular inspection and technical condition evaluation; Detection of voids behind concrete structures Detection of voids at subway entrances and exits Detection of underground voids
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