Gas cylinders. Welded steel pressure drums up to 3 000 litres capacity for the transport of gases. Design and construction - Capacities up to 1 000 litres1 Scope This part of ISO 21172 specifies the minimum requirements for the material, design, fabrication, construction and workmanship, inspection, and testing at manufacture of refillable welded steel gas pressure drums, hereafter referred to as drums, of volumes 150 l to 1 000 l and up to 300 bar test pressure for compressed and liquefied gases. Only cylindrical and spherical containers are covered.

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• Improve the performance of Road Traffic Safety

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