外六角铜油视镜(NPT螺纹)
主体材料:
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G3/8英寸黄铜液油观察镜油窗减速机油位器油镜堵头M16X1.5
NPT 1寸1/2寸美制螺纹减速机压缩机油位观察孔视镜油窗油位计
NPT1/2寸3/4寸减速机黄铜油位器油位计视窗油窗油镜
M20X1.5螺纹减速机压缩机油位观察孔视镜油窗油位计
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