A Guide to Choosing Heat Shrink Tube Specifications and Selecting the Appropriate Inner Diameter
Heat shrinkable tubes are used in a wide range of applications, so there are many specifications. Smaller specifications generally increase upwards from 0.5mm to 1mm. This also causes users who are using heat shrink tubes for the first time to be troubled by not knowing how to choose the specifications of heat shrink tubes. There are many strategies on the Internet to teach you how to choose the specifications of heat shrink tubes. However, users who are not familiar with heat shrink tubes still have to worry about it. I don’t know clearly how to choose the specifications of heat shrink tubing? As an editor of a heat shrink tube manufacturer for more than ten years, today I will teach you how to choose heat shrink tube specifications in a fool-proof way. I will mainly analyze it from the following two situations.
1. How to choose the appropriate heat shrinkable tube for flat products
First of all, you need to understand what parameters the heat shrinkable tube specification refers to. The heat shrinkable tube specification refers to the pore size of the heat shrinkable tube, not the flattened width. Many users misunderstand it, resulting in the purchased heat shrinkable tube being inappropriate. Because the user's products are flat, such as ribbons and busbars. For example, if the width of the webbing is 20mm, and you choose Φ20mm heat shrinkable tube, this is obviously inappropriate. In this case, in order to determine the appropriate specifications of the heat shrink tube, it is necessary to calculate the circumference of the coated product and reserve about 20% of the margin. This is to facilitate the installation of the heat shrink tube so that it will not be too tight and affect production. efficiency.
Let’s take a 20mm wide, 1mm thick webbing as an example. We need to calculate the circumference of the webbing. The circumference of the webbing = width*2+thickness*2=20*2+1*2=42mm. Diameter = circumference/3.14=42/3.14=13.4mm, leaving 20% inner diameter allowance, it can be concluded that we can choose Φ16mm heat shrink tube.
2. How to choose the appropriate heat shrinkable tube for round columnar products
It is very simple to choose the heat shrinkable tube specifications for this round product, such as wires, resistors, capacitors, terminal blocks, tubular products, etc. Just directly match the outer diameter of your product in the heat shrinkable tube specification application range comparison table below. These parameters are based on more than 10 years of experience in the heat shrink tube industry. Choosing the heat shrink tube of appropriate specifications can improve the protective effect of the heat shrink tube.
| Comparison table of application range of heat shrinkable tube specifications | |||||
| Heat shrink tube specifications | Supply inner diameter (mm) | Fully reduced size (mm) | Packing | Scope of application | |
| the inside diameter of | wall thickness | meters/roll | (mm) | ||
| Φ0.5/0.35 | 0.80±0.20 | ≤0.35 | 0.33±0.10 | 400 | 0.3~0.6 |
| Φ0.6/0.40 | 0.90±0.20 | ≤0.40 | 0.33±0.10 | 400 | 0.4~0.7 |
| Φ0.8/0.50 | 1.10±0.20 | ≤0.50 | 0.33±0.10 | 400 | 0.6~0.8 |
| Φ1.0/0.65 | 1.50±0.20 | ≤0.65 | 0.36±0.10 | 400 | 0.75~0.9 |
| Φ1.5/0.85 | 2.00±0.20 | ≤0.85 | 0.36±0.10 | 400 | 0.95~1.4 |
| Φ2.0/1.00 | 2.50±0.20 | ≤1.00 | 0.45±0.10 | 400 | 1.1~1.8 |
| Φ2.5/1.30 | 3.00±0.20 | ≤1.30 | 0.45±0.10 | 400 | 1.35~2.3 |
| Φ3.0/1.50 | 3.50±0.20 | ≤1.50 | 0.45±0.10 | 400 | 1.6~2.7 |
| Φ3.5/1.80 | 4.00±0.20 | ≤1.80 | 0.45±0.10 | 400 | 1.85~3.2 |
| Φ4.0/2.00 | 4.70±0.20 | ≤2.00 | 0.45±0.10 | 400 | 2.1~3.6 |
| Φ4.5/2.30 | 5.00±0.20 | ≤2.30 | 0.56±0.10 | 200 | 2.35~4.0 |
| Φ5.0/2.50 | 5.50±0.20 | ≤2.50 | 0.56±0.10 | 200 | 2.6~4.5 |
| Φ5.5/2.75 | 6.00±0.20 | ≤2.80 | 0.56±0.10 | 200 | 2.9~5.0 |
| Φ6.0/3.00 | 6.50±0.20 | ≤3.00 | 0.56±0.10 | 200 | 3.1~5.4 |
| Φ7.0/3.50 | 7.50±0.30 | ≤3.50 | 0.56±0.10 | 100 | 3.7~6.3 |
| Φ8.0/4.00 | 8.50±0.30 | ≤4.00 | 0.56±0.10 | 100 | 4.2~7.2 |
| Φ9.0/4.50 | 9.50±0.30 | ≤4.50 | 0.56±0.10 | 100 | 4.7~8.0 |
| Φ10/5.00 | 10.50±0.3 | ≤5.00 | 0.56±0.10 | 100 | 5.2~9.0 |
| Φ11/5.50 | 11.50±0.30 | ≤5.50 | 0.56±0.10 | 100 | 5.7~10 |
| Φ12/6.00 | 12.50±0.30 | ≤6.00 | 0.56±0.10 | 100 | 6.2~11 |
| Φ13/6.50 | 13.50±0.30 | ≤6.50 | 0.56±0.10 | 100 | 6.7~12 |
| Φ14/7.00 | 14.50±0.30 | ≤7.00 | 0.70±0.10 | 100 | 7.3~13 |
| Φ15/7.50 | 15.50±0.40 | ≤7.50 | 0.70±0.10 | 100 | 7.8~14 |
| Φ16/8.00 | 16.50±0.40 | ≤8.00 | 0.70±0.10 | 100 | 8.3~15 |
| Φ17/8.50 | 17.50±0.40 | ≤8.50 | 0.70±0.10 | 100 | 8.8~16 |
| Φ18/9.00 | 19.00±0.50 | ≤9.00 | 0.70±0.10 | 100 | 9.3~17 |
| Φ20/10.0 | 22.00±0.50 | ≤10.0 | 0.83±0.15 | 100 | 10.4~19 |
| Φ22/11.0 | 24.00±0.50 | ≤11.0 | 0.83±0.15 | 100 | 11.4~21 |
| Φ25/12.5 | 26.00±0.50 | ≤12.5 | 0.90±0.15 | 50 | 12.8~24 |
| Φ28/14.0 | 29.00±0.50 | ≤14.0 | 0.90±0.15 | 50 | 14.4~29 |
| Φ30/15.0 | 31.50±1.00 | ≤15.0 | 1.00±0.15 | 50 | 16~29 |
| Φ35/17.5 | 36.50±1.00 | ≤17.5 | 1.00±0.15 | 50 | 18~34 |
| Φ40/20.0 | 41.50±1.00 | ≤20.0 | 1.00±0.15 | 50 | 21~39 |
| Φ45/22.0 | 46.50±1.50 | ≤22.5 | 1.00±0.15 | 25 | 23.5~44 |
| Φ50/25.0 | ≥50 | ≤25.0 | 1.10±0.15 | 25 | 26~49 |
| Φ60/30.0 | ≥60 | ≤30.0 | 1.20±0.15 | 25 | 35~50 |
| Φ70/35.0 | ≥70 | ≤35.0 | 1.30±0.20 | 25 | 40~60 |
| Φ80/40.0 | ≥80 | ≤40.0 | 1.30±0.20 | 25 | 45~70 |
| Φ90/45.0 | ≥90 | ≤45.0 | 1.30±0.20 | 25 | 50~80 |
| Φ100/50.0 | ≥100 | ≤50.0 | 1.30±0.20 | 25 | 55~85 |
| Φ120/60.0 | ≥120 | ≤60.0 | 1.30±0.20 | 25 | 65~100 |
| Φ150/75.0 | ≥150 | ≤75.0 | 1.30±0.20 | 25 | 80~120 |
| Φ180/90.0 | ≥180 | ≤90.0 | 1.30±0.30 | 25 | 85~150 |
| Φ210/105 | ≥210 | ≤105.0 | 1.30±0.30 | 25 | 110~180 |
| Φ230/105 | ≥230 | ≤115.0 | 1.30±0.30 | 25 | 120~210 |
| Φ250/125 | ≥250 | ≤125.0 | 1.30±0.30 | 25 | 130~230 |
| Φ300/150 | ≥300 | ≤150.0 | 1.30±0.30 | 25 | 160~250 |
Notes on the comparison table of heat shrinkable tube specifications:
1. The number in front of the heat shrink tube specification indicates the pore diameter before shrinkage, and the number after the slash indicates the smallest pore diameter that can be heat shrunk.
2. The scope of application can select the specifications of the heat shrink tube according to the two parameters of the maximum outer diameter and the lowest outer diameter of the product, because the outer diameter of some products is irregular. If the maximum outer diameter of the product is 48mm, the minimum The outer diameter is 27mm, then we can choose the specification of Φ50mm. The following applicable range is between 26-49.
The above is all the information on how to choose the specifications of heat shrink tubes brought to you by the heat shrink tube manufacturer DUWAI. If you still don’t know how to choose the appropriate heat shrink tube, you can contact online customer service and we will match you with the appropriate model and specifications for free.
