方體：長100mm，寬度20mm = 100+20=120/1.57=76.43mm，所以80mm的熱縮套管即可使用。
As a kind of auxiliary material for industrial products, heat shrinkable sleeve is a product often used by many electronic factories, automobile wire harness factories and battery power manufacturers. But many times, engineers are communicating the products they need, so that the front-end procurement can purchase products. Many purchases often don't know the inner diameter of the heat-shrinkable casing.
The size of the heat shrinkable sleeves we know varies from a few millimeters of the smallest size to a few hundred millimeters of a large size. How is the size of the heat shrinkable sleeve judged? How to divide the specifications of the heat shrinkable sleeve.
Heat shrinkable sleeves can be divided into various types according to materials, characteristics and application fields. There are single wall heat shrinkable sleeves, double walled heat shrinkable sleeves, Teflon heat shrinkable sleeves, busbar heat shrinkable sleeves, and crucibles. Rubber heat shrink tubing and more. The heat shrinkable sleeves of various colors are slightly different in packaging and state. Some are in flattened packaging, some are in tubular packaging, and in the industry for uniformity, the inner tube of the heat shrinkable sleeve is used as a heat shrinkable sleeve. Unified measurement standard for pipe specifications.
So, how does the heat shrink tubing manufacturer distinguish the inner diameter of the casing?
In general, the salesperson and the production personnel also see the physical object, and also accurately distinguish the inner diameter and the wall thickness of the casing with the naked eye. Instead, use a professional test tool: plug gauge and caliper to measure the casing (the internal diameter of the main test casing of the plug gauge, the caliper mainly test the wall thickness of the casing).
Environmentally friendly heat shrinkable casing
In fact, the heat shrinkable sleeve is a kind of casing, that is, a circular tubular object.
Expressed by the folding diameter. The folding diameter 100 represents a heat shrinkable sleeve having a flattened width of 100 mm. Half of the perimeter. Expressed in diameter. The diameter is the inner diameter of the round tube; Φ100 represents the heat shrinkable sleeve having a diameter of 100 mm.
Length + width / 1.57 is the approximate outer diameter, and then find the corresponding heat shrinkable sleeve size can be used together
Square body: length 100mm, width 20mm = 100+20=120/1.57=76.43mm, so 80mm heat shrinkable sleeve can be used.
PS: If you want to cover a length of one meter, then the choice of casing will be larger, and the construction will be carried out in the future.