gpb0421 发表于 2017-2-4 14:44:05

请教图中所标螺纹代表什么意思?

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
请问图上所标螺纹“MG3/8”是什么螺纹?
是普通管螺纹吗? “MG”代表何意思,请知晓的大侠指点一二,万分感谢!!!:handshake

未来第一站 发表于 2017-2-4 18:19:43

密封管螺纹?

韩寒11 发表于 2017-2-4 20:32:22

ZG俗称管锥,即螺纹由一圆锥面加工而成,一般的水管接头都是这样的,
像你这种的MG,难道是某种标准的管螺纹??

albert.tang 发表于 2017-2-4 21:51:24

没见过MG标注呀

魍者归来 发表于 2017-2-5 09:53:26

没见过这种标注,怀疑是【60°米制管螺纹】,查《机械工艺师手册》上有,但上面的标注是ZM和M这两种……
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查看完整版本: 请教图中所标螺纹代表什么意思?