What Is an Outer Cannula?

Polyethylene outer tube is made of high-density polyethylene material. It has extremely high mechanical strength and excellent corrosion resistance. It can protect the tube from damage caused by external factors during transportation, installation and use. The outer tube should be added with antioxidants, UV stabilizers and carbon black.

Polyethylene jacket tube

High density polyethylene products have extremely high abrasion resistance, impact resistance, excellent internal pressure strength, environmental stress crack resistance, good self-lubrication, anti-adhesion, unique low temperature resistance, and excellent chemical stability Properties, such as metallurgical, power, petroleum, textile, papermaking,

1.Feeding 2

1. Excellent wear resistance ranks first in plastics, 4 times higher than nylon 66 and polytetrafluoroethylene, and 6 times higher than carbon steel.

2. Small coefficient of friction, good non-adhesion, self-lubricity equivalent to PTFE, and coefficient of friction is only 0.07-0.11.

3. The impact strength ranks first among plastics, which is 2 times that of PC and 5 times that of ABC, and can maintain high toughness at liquid nitrogen temperature (-196 ° C), especially excellent low temperature impact resistance, and the impact energy absorption value is in all It is the highest value in plastic and has good sound-absorbing effect.

4. Excellent chemical stability; except for a few solvents which are corrosive to them, common inorganic, organic acids, alkalis, salts and organic solvents are not corrosive to this material.

5. Excellent anti-aging performance. Under natural sunlight, the aging life of HDPE is 50 years. As a new type of engineering plastic, it combines many excellent properties in one.

6. High chemical stability, can resist various corrosive media and organic media in a certain temperature and concentration range;

Since its appearance in the late 1960s, this polymer has attracted widespread attention due to its many excellent properties, but its special difficulty in processing has limited its development and application. It was not until the late 1970s that research institutions and large companies in developed countries such as Japan, the United States, and Germany began to realize industrialization. This opened the prelude to the large-scale application of ultra-high molecular weight polyethylene. As countries continue to increase research efforts, sintering, plunger extrusion, screw extrusion, and injection molding methods have gradually developed, laying the foundation for large-scale application of ultra-high molecular weight polyethylene.

Precautions for high density polyethylene jacket tube

A. Polyethylene pipes are easy to age. If they are stored in the open air, they should be covered with tarpaulin. The stacking place should be away from high heat and fire sources. After being made into heat-preserving pipes, do not expose or quench them. Performance and service life.

B. In the process of transportation and pipe wearing, barbaric loading and unloading should be avoided. The hooks are too thin, too hard, and used too hard, otherwise the polyethylene pipe may be easily broken, scratched or torn.

C. The pipe wall thickness can be adjusted, and the wall thickness and color can be produced according to user requirements.

The calculation formula of high-density polyethylene jacket tube is: when the outer diameter is 400mm, the sum of the upper and lower deviations = 0.1 × the nominal wall thickness + 0.2

When the outer diameter is 400mm, the sum of the upper and lower deviations = 0.15 × the nominal wall thickness + 0.2