What's the difference between heat shrinkable middle wall pipe and heat shrinkable casing? It's easy to confuse heat shrinkable middle wall pipe and heat shrinkable casing under normal circumstances. The full name of heat shrinkable middle wall pipe is heat shrinkable medium wall thickness casing, which is also a kind of heat shrinkable casing, but it is different from heat shrinkable casing.

1. From the material point of view, the formulation of polyethylene substrates of the two products is different, and the material of the middle wall pipe is softer.

2. In terms of wall thickness, the wall thickness of the heat-shrinkable tube is medium, which is slightly thinner than the casing.

3. From the point of view of gluing technology, the protective sleeve is usually manually glued at both ends of the heat shrinkable tube, or can be fully glued. The glued layer is cold glue; the glued heat shrinkable middle wall tube is hot melt glue, and the glued tube is directly coated below 75 caliber, and screw glued method is used for 75 caliber and above specifications. The appearance of the protective sleeve sleeve sleeve tube is obviously different. It is a kind of mechanical full-glued product, and its waterproofing performance is Shrinkage casing is good.

4. From the way of gluing, the two methods of gluing are different. Generally, the maximum diameter of the heat-shrinkable middle-wall pipe is 200, while the heat-shrinkable casing can achieve 300, mainly the large-caliber spiral gluing equipment of the middle-wall pipe is more expensive.

5. In the field of application, because of the above differences, the usage of the double-wall heat-shrinkable tube and the heat-shrinkable sleeve are also different. The heat-shrinkable middle-wall tube is mainly used in the middle connection of the cable, and can also be used in other products such as automobiles, while the heat-shrinkable sleeve is basically used as the inner and outer sheath of the middle connection of the cable. At the same time, the heat shrinkable middle wall pipe is used more abroad, and the domestic market is not very large.

区别热缩中壁管和热缩护套管

热缩中壁管和热缩护套管有什么区别，通常情况下容易将热缩中壁管和热缩护套管这两种产品搞混淆。热缩中壁管全名是热收缩中等壁厚护套管，也就中壁护套管，其实也是热缩护套管的一种，不过和热缩护套管是有很多区别的。

1、从材质上讲，两种产品聚乙烯基材配方不一样，中壁管材质较柔软。

2、从壁厚度上讲，热缩中壁管的壁厚是中等厚度，要比护套管稍微薄一些。

3、从涂胶工艺上讲，护套管通常是手工热缩管两端涂胶，也可以全涂胶，所涂敷的胶层是冷胶；涂胶热缩中壁管所采用的是热熔胶，75口径以下是直涂，75口径及以上规格采用螺旋涂胶方式，从外观上看上去区别很明显，是一种机械全涂胶的产品，而防水性能比热缩护套管好。

4、从涂胶方式来讲，二者涂胶的方式不一样，一般情况下热缩中壁管做的最大口径是200，而热缩护套管可以做到300，主要是中壁管的大口径的螺旋涂胶设备比较贵。

5、从应用领域来讲，双壁热缩管由于以上的诸多不同，热缩中壁管和热缩护套管用法也有很多不同，热缩中壁管主要用在电缆的中间连接上，也可以用在汽车等其他产品上，而热缩护套管基本就用作电缆中间连接的的内外护套。同时热缩中壁管这种产品国外用的多一些，国内市场还不是很大。