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2. Scope and Field of Application 2.1 Type of Equipment This Standard applies to welded composite enclosures of cast and wrought aluminium and aluminium alloy enclosures pressurized with dry air, inert gases, eg, sulphur hexafluoride, carbon tetraflu

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G40.20-04 General requirements for rolled or welded structural quality steel 1 Scope 1.1 This Standard outlines the requirements that apply, unless otherwise specified in a purchase order or individual standard, to structural quality steel plates,