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See Chinese contents: SY/T 0556-2018 SY/T 0556-2018: Technical code for quick opening closure
This Standard specifies the basic requirements for the structure, material, design, manufacturing, inspection and acceptance, packaging and transportation of quick opening closure. This Standard is applicable to quick opening closure (hereinafter referred to as quick opening closure) with a design pressure less than or equal to 35MPa and a design temperature of -50~200-degree Culcius for the onshore oil and gas industry.
