Specification for particular types of winding wires. Part 21. Round copper wires with enamel insulation based on polyester or polyetherimide and with outer coating based on polyamide, class 180
State system for ensuring the uniformity of measurements of the Republic of Uzbekistan. Hallmarks of verification and calibration. Rules of manufacture, use, storage and clearing. Replaces O’z DSt 8.008-93
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