This standard specifies the product classification, technical requirements, test methods, inspection rules, markings, and packaging of composite core overhead wires (hereinafter referred to as composite core wires). This standard applies to composite material core overhead conductors for overhead power lines. The following normative references are essential for the application of this document. For dated references, only the dated version applies. For undated references, the latest version (including all modifications) applies to this document. GB/T1173 Cast Aluminum Alloy GB/T 1179-2008 Round Wire Concentric Stranded Hollow Conductors GB/T 1220 Stainless Steel Bars GB/T 2314 General Technical Conditions for Power Hardware GB/T 3048.2-2007 Electrical Performance Test Methods for Electric Wires and Cables Part 2: Metal Material Resistivity Test GB/T 3048.4-2007 Electrical Performance Test Methods for Electric Wires and Cables Part 4: Conductor DC Resistance Test GB/T3190 Wrought Aluminum and Aluminum Alloy Chemical Composition GB/T 4437.1 Aluminum and Aluminum Alloy Hot Extruded Pipe Part 1: Seamless circular tubes GB/T 49() 9.2-2009 Test methods for bare wires Part 2: Dimensional measurement GB/T 4909.3-2009 Test methods for bare wires Part 3: Tensile testing GB/T 6892 Aluminum and aluminum alloy extruded profiles for general industrial use GB/T 6893 Aluminum and aluminum alloy tensile (emulsion) Seamless Pipe Manufacturing GB/T 20878 Stainless Steel and Heat-resistant Steel Grades and Chemical Composition GB/T 22077-2008 Creep Test Methods for Overhead Conductors GB/T 29324-2012 Fiber Reinforced Resin Matrix Composite Cores for Overhead Conductors GB/T 29325-2012 Soft Aluminum Shaped Wire for Overhead Conductors GB/T 30551-2014 Heat-resistant Aluminum Alloy Wire for Overhead Strands JB/T 8137.1 Wire and Cable Delivery Tray Part 1: General Provisions JB/T 8137.4 Wire and Cable Delivery Tray Part 4: Steel Composite Structure The terms and definitions defined in GB/T 1179-2008 for delivery tray 3 and the following terms and definitions apply to this document
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