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Scope This standard specifies the terms and definitions, product classification, technical requirements, test methods, inspection rules and markings, packaging and storage requirements for general pressure gauges This standard is applicable to mechanical pointer pressure gauges, vacuum gauges, and pressure vacuum gauges (hereinafter referred to as instruments) with spring tubes (C-shaped tubes, coil springs, spiral tubes) as elastic components Note: This standard includes stainless steel pressure gauges and pressure gauges with irregular shells 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, 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 problems100% inspection 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
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