We know that the communication cold shrink tube needs to pull out the support bar during construction, and then it will shrink on the object by itself. In fact, the quality of this support bar is very important. Many times the quality is not close, and it will be broken as soon as it is pulled. This seriously affects the smoothness of use and the shrinkage quality of the cold shrink tube. How do we usually judge the quality of this support bar.
First of all, it can be visually judged from the appearance. The high-quality support bar is transparent or creamy. On average, it has less mixture and is more pure. Poor quality support bars may have fillers, even recycled materials, blackish color, uneven distribution, significant color difference, and even small particles inside.

     Second, the high-quality support bar has good crimping and moderate strength, so that it does not slip away before installation, and shrinks smoothly during installation and extraction, and easily controls the installation speed. This can make the communication shrink and contract evenly and install more perfectly.

     Third, high-quality support bars have appropriate thicknesses. Different thicknesses are used for cold-shrinked products with different calibers and different shrinkage forces. If they are too thin, they are easily compressed and deformed, which affects the shrinkage quality and even breaks.

通讯冷缩管的支撑条介绍
我们知道通讯冷缩管在施工时需要抽出支撑条，然后它会自己收缩在物体上。这个支撑条的质量其实很重要，很多时候有的质量不过关的，会一拉就断，这严重影响使用的流畅度以及冷缩管的收缩质量。我们通常如何来判断这个支撑条的质量呢。
首先可以从外观来目测，优质的支撑条光彩透明或者乳白，平均，混料较少，比较纯正。差的质量支撑条可能填料，甚至回收料多，颜色偏黑，且  分布不平均，色差显著，甚至有微小颗粒在里面。

     第二，优质的支撑条，压接良好，力度适中，不至于为安装前就滑开，安装抽取时平滑收缩，轻易控制安装速度，这样可以使得通讯冷缩收缩平均，安装的更加完美。

     第三，优质的支撑条具有相宜的厚度，对不同口径，不同收缩力的冷缩产品采用不同厚度，太薄的话，轻易被压迫而变形，从而影响收缩质量，甚至破损。

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