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Specification and qualification of welding procedures for metallic materials. Welding procedure test. Part 12. Spot, seam and projection welding
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Alloys and foundry alloys of rare metals. Methods for the determination of tungsten
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Railway tractive rolling stock. Part 1. Inspection methods for parameters of electrical engineering
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Petroleum and natural gas industry. Subsea production systems. Lifting equipment. General principles
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State system for ensuring the uniformity of measurements. State verification scheme for measuring instruments of sound pressure in water within frequency range from 1*10 -3 to 1*10 6 Hz
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