标 准 编 号:BS EN 13942-2009 简体中文标题:石油和天然气工业.管道输送系统.管道阀繁体中文标题:石油和天然气工业.管道输送系统.管道阀English Name:Petroleum and natural gas industries - Pipeline transportation systems- Pipeline valves (ISO 14313:2007 modified)