How to calculate the size of the heat shrinkable tube?

The size calculation of heat shrink tubing mainly depends on the following factors:

1. Heat shrinkage ratio: that is, the diameter ratio of the heat shrinkable tube before and after shrinkage.

2. The diameter or width of the installation object.

3. Fixing position and fixing method. Generally speaking, the heat shrinkage ratio of the heat shrinkable tube is 2:1 or 3:1, and there are also heat shrinkable tubes with other heat shrinkable ratios. To calculate the size of the heat shrinkable tube, first measure the diameter or width of the item to be covered, multiply it by the heat shrinkage ratio value, and obtain the initial diameter of the heat shrinkable tube. Then according to the actual situation, leave a certain margin as the size of the heat shrinkable tube after heat shrinkage. When fixing the heat shrinkable tube, care should be taken to avoid too tight or too loose, so as to ensure the use effect of the heat shrinkable tube.