热缩护套管具有良好的绝缘性和抗开裂性，主要用于电缆的外保护层的修补和电缆中间连接的外层保护。

Heat shrink protection cover tube has good insulation and ruptuing resistance . It suitable for mend of cable out-layer protection and outlay protection of intermediate connecting .

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第一和第二套管针活门定位在套管主体端盖内，并且各自在其中间部分具有开口。

First and second trocar valves are positioned within the cannula body end housing and each having an opening in a medial portion thereof.

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第一和第二套管针活门定位在套管主体端盖内，并且各自在其中间部分具有开口。

First and second trocar valves are positioned within the cannula body end housing and each having an opening in a medial portion thereof.

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