标 准 编 号:GB/T 12716-2002 简体中文标题:60°密封管螺纹 繁体中文标题:60°密封管螺纹 English Name:Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads... 上一篇:GB 13296-2007 锅炉、热交换器用不锈钢无缝钢管下一篇:GB/T 4648-1996 滚动轴承 圆锥滚子轴承 凸缘外圈 外形尺寸