Russian standards PDF

Specification and qualification of welding procedures for metallic materials. Welding procedure test. Part 12. Spot, seam and projection welding

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Specification and qualification of welding procedures for metallic materials. Welding procedure test. Part 13. Upset (resistance butt) and flash welding

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Destructive tests on welds in metallic materials. Macroscopic and microscopic examination of welds

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Resistance welding. Locking tapers for electrode holders and electrode caps

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Conformity assessment. Requirements for bodies providing audit and certification of management systems. Part 1. Requirements

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Petroleum and natural gas industry. Subsea production systems. Prevention of cracking in pipeline construction. General principles

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