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State system for ensuring the traceability of measurements. Analyzers for determination of sulphur in petroleum and petroleum products. Verification procedure
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Surface grinding machines with two columns. Test conditions. Machines for grinding slideways. Testing of the accuracy
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Threaded pipe connections. Clamp and thrust rings. Construction
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Welding and allied processes. Types of joint preparation. Part 3. Metal inert gas welding and tungsten inert gas welding of aluminium and its alloys
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