發布日期：2022-04-26 點擊率：142
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金屬線管采用絲接時，套絲長度不應小于管接頭長度的1/2，連接處外露2~3扣，絲扣表面應均勻、光滑、無缺損、亂絲現象。應該選用通絲管接頭，管口應處理光滑無毛刺。
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