BAIJIAN - Third party testing organization
This standard specifies the testing principles、 sample preparation、 reagent preparation、 testing procedures、 and judgment principles of the copper sulfate test method for zinc coating on galvanized steel wire. This standard is applicable to the uniformity test of the zinc layer on hot-dip galvanized steel wire、 and zinc aluminum alloy coated steel wire and electro galvanized steel wire can also refer to this standard. The following normative references 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 603 Preparation of formulations and products used in chemical reagent test methods GB/T665 Chemical reagent Copper sulfate pentahydrate (II) (copper sulfate) GB/T674 Chemical reagent Powdered copper oxide
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 problemsinspection 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