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See Chinese contents: GB/T 5099.3-2017 GB/T 5099.3-2017: Seamless steel gas cylinders -- Part 3: Normalized cylinders
This Part of GB/T 5099 specifies the types and parameters, technical requirements, test methods, inspection rules, marks, coating, packaging, transportation, storage, product qualification certificate, batch inspection quality certificate of seamless steel gas cylinders, after normalizing or post-normalizing tempering treatment (hereinafter referred to as steel cylinder). This Part is applicable to the design and manufacture of refillable steel cylinders, which have a nominal working pressure not greater than 15 MPa, a nominal water volume of 0.5 L ~ 150 L, an ambient temperature of use at -20 ¡ãC ~ 60 ¡ãC, for holding compressed gas or high-pressure liquefied gas. This Part does not apply to vehicle gas cylinders and cylinder-type pressure vessels attached to machinery and equipment. Note: For steel seamless gas cylinders, which have a nominal water volume of less than 0.5 L, it can also be manufactured and inspected with reference to this Part.
