The safety management system of American pressure pipeline was expatiated on, and the code and standard system of American pressure pipeline and its characteristics were deeply analyzed.
叙述了美国压力管道的安全管理体系，深入分析了美国压力管道的标准法规体系及其特点。
The safety management system of American pressure pipeline was expatiated on, and the code and standard system of American pressure pipeline and its characteristics were deeply analyzed.
叙述了美国压力管道的安全管理体系，深入分析了美国压力管道的标准法规体系及其特点。
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