Russian standards PDF
Qualification test of welders. Fusion welding. Part 3. Copper and copper alloys
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Qualification test of welders. Fusion welding. Part 2. Aluminium and aluminium alloys
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Systems security complex. Metal detectors continuals to apartment. General technical requirements. Test methods
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Optical elements for light signal devices of a railway transport. Specifications
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Vehicles. Heat exchangers and thermostats. Technical requirements and test methods
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Coaxial cables for cable television networks. General specifications
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