This standard specifies the classification, size and length, technical requirements, sampling, testing methods, inspection rules, packaging, marking, and quality certificate of zinc 5% aluminum rare earth alloy coated steel strands (hereinafter referred to as steel strands). This standard is applicable to steel strands used for hangers, suspensions, communication cables, overhead power lines, and fixed objects. This product is suitable for workplaces that require corrosion resistance, tensile deformation, etc. 2. The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 228-1987 Metal Tensile Testing Methods GB/T 701-1997 Hot Rolled Low Carbon Steel Wire Rods GB/T 2104-1988 Steel Wire Rope Packaging, General provisions for markings and quality certificates GB/T 2973-1991 Test method for zinc coating weight of galvanized steel wire (GB/T 2976-1988 Metal wire winding test method GB/T 4354-1994 High quality carbon steel hot-rolled wire rod GB/T 8358-1987 Steel wire rope fracture tensile test method GB/T 12689.1-1990 Chemical analysis method for zinc and zinc alloys: EDTA titration method for the determination of aluminum content
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