13701| 29
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管螺紋中的2分到底是幾毫米 |
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點(diǎn)評(píng)
不好意思,,一時(shí)腦子沒轉(zhuǎn)過彎來,你說的對(duì),。常說的二分管、四分管,、六分管對(duì)應(yīng)的是2/8,、4/8、6/8,。謝謝指正,!
2分管內(nèi)也只有一寸管的1/4
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