ISO 14313-2007
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Petroleum and natural gas industries — Pipeline transportation systems — Pipeline valves
石油和天然氣工業(yè) - 管道運輸系統(tǒng) - 管道閥門
Petroleum and natural gas industries — Pipeline transportation systems — Pipeline valves
石油和天然氣工業(yè) - 管道運輸系統(tǒng) - 管道閥門