标 准 编 号:ASME B16.20-2000 简体中文标题:管法兰用金属垫圈.环接螺旋形垫圈和有套垫圈 繁体中文标题:管法兰用金属垫圈.环接螺旋形垫圈和有套垫圈 English Name:Metallic Gaskets For Pipe Flanges: Ring Joint Spiral Wound And Jacketed