ISO 22991:2004

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Gas cylinders — Transportable refillable welded steel cylinders for liquefied petroleum gas (LPG) — Design and construction

ISO 22991:2004 refers to an international standard that specifies minimum requirements for the design, construction, and workmanship of transportable, refillable, welded steel cylinders used for liquefied petroleum gas (LPG), particularly focusing on cylinders with a water capacity up to 150 liters exposed to ambient temperatures; essentially outlining the quality standards for manufacturing such LPG gas cylinders