标准编号:ASME B16.20-2012简体名称:管法兰环形连接、螺旋绕和套封的金属垫圈繁体名称:管法兰环形连接、螺旋绕和套封的金属垫圈英文名称:Metallic Gaskets for Pipe Flanges Ring-Joint, Spiral-Wound, and Jacketed
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