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Gas cylinders. Technical requirement and testing of LPG self-closing cylinder valves
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Structural rolled steel of improved machinability. Specification
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Plate crank shears with inclined blade. Parameters and dimensions. Norms of accuracy
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Switchgear, controlgear and fuses. Chapter 441. Terms and definitions
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Resistance welding. Vocabulary. Part 1. Spot, projection and seam welding
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