Russian standards PDF
Carbonaceous materials for the production of aluminium. Cathode block materials. Part 1. Determination of the expansion due to sodium penetration with application of pressure
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Carbonaceous materials for the production of aluminium. Cathode block materials. Part 2. Determination of the expansion due to sodium penetration without application of pressure
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Non-destructive testing. Eddy current testing. Basic principles
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Specification and qualification of welding procedures for metallic materials. Qualification based on previous welding experience
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Specification and qualification of welding procedures for metallic materials. Qualification by adoption of a standard welding procedure
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