Number tubes are mainly used to mark lines or pipelines to facilitate the maintenance and repair of lines and pipelines. Number tubes are divided into heat shrinkable number tubes and PVC plum blossom number tubes. Many users don’t know what to choose between the two. Choice, what is the difference between the two? The editor of heat shrinkable tube manufacturer Duwai will give you an in-depth understanding of the difference between heat shrinkable number tubes and universal number tubes.

    Heat-shrinkable number tubes use heat-shrinkable tubes as printing carriers, and the characters that need to be marked are printed on the heat-shrinkable tubes to achieve identification, so they are also called heat-shrinkable number tubes.

    The universal number tube refers to the PVC plum blossom internal tooth number tube. The inner diameter is fixed and cannot be changed. For example, the 1.5mm² number tube is only suitable for 1.5mm² wires, and the applicable range is slightly narrower.

1. The difference in inner diameter specifications: The inner diameter of heat shrinkable number tubes ranges from 1.5mm to 125mm in diameter, and the specifications are relatively complete. The specifications of PVC number pipes are relatively limited, with only 10 specifications including 0.5mm²-16mm².

2. The difference in firmness and anti-slip properties: Because the heat shrinkable number tube is shrinkable, it can be effectively bonded to the cables that need to be marked. The PVC number pipe can only lock the cables by the plum blossom teeth on the inner wall, because the material itself is relatively soft and can slide back and forth with a little external force.

3. Difference in ease of use: After the heat-shrinkable number tube is put on the cable, it needs to be heated and shrunk to fix it on the cable. The PVC number pipe only needs to be put on the cable, and there is no need to operate it again. In terms of ease of use, the PVC number pipe is more convenient.

4. The difference in the diversity of printed content: PVC number pipes generally use wire numbering machines to print content. The printed content is limited to Arabic numerals, English letters, Chinese characters and commonly used electrical symbols, and the content is relatively simple. The heat-shrinkable number tube adopts a professional computer printing system developed by Duwai. The content is more expandable, such as picture LOGO and multi-line printing.

    The main differences between heat shrinkable number tubes and PVC number tubes are the above four points. In terms of the diversity of printed content, anti-slip properties and specification compatibility, heat shrinkable number tubes are better than PVC number tubes; but in terms of construction convenience, PVC number tubes are obviously better than heat shrinkable number tubes. Therefore, when choosing, you need to adapt to current conditions and choose the appropriate number management based on the usage scenario.