2911| 2
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管螺紋標注法解讀 |
點評
ZG是圓錐管螺紋,是老標準了。
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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