四分管螺纹尺寸是多少

四分管螺纹尺寸是分管指在管道连接中使用的一种螺纹尺寸标准，通常用于水管、螺纹气管等管道连接中。尺寸四分管螺纹尺寸是多少指管道螺纹的外径、螺距和牙数的分管具体大小。

在四分管螺纹尺寸标准中，螺纹常见的尺寸尺寸有1/4、3/8、多少1/2、分管3/4、螺纹1、尺寸1 1/4、多少1 1/2、分管2等。螺纹其中，尺寸1/4英寸的四分管螺纹外径为0.54厘米，螺距为0.33厘米，牙数为18；3/8英寸的四分管螺纹外径为0.81厘米，螺距为0.33厘米，牙数为18；1/2英寸的四分管螺纹外径为1.04厘米，螺距为0.42厘米，牙数为14。

除了上述常见的四分管螺纹尺寸外，还有其他的螺纹尺寸标准，如NPT、BSP等。不同的螺纹尺寸标准适用于不同的管道连接需求，用户需要根据实际情况选择适合自己的螺纹尺寸标准。

总之，四分管螺纹尺寸是管道连接中常见的一种螺纹尺寸标准，用户需要根据实际需求选择适合自己的尺寸标准。

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