Use and maintenance of plastic tubes

Used to assemble fixed tubes and tube assemblies, as long as possible, they should be supported and fixed with suitable clamps. It must be ensured that the tube can move normally (that is, expand and move) under the condition of a village or a vacuum, and the length and twist of the tube shall not be restricted by the installation of the clamp.

Moving parts

If the tube and tube assembly is used as a coupling in a moving part or assembly, its length should be appropriate, not too long, and the tube should not be subjected to vibration loads during movement. Clamping, friction, excessive bending or excessive stretching or twisting stress.

Logo

If the tube is to be marked with items specified by the tube standard or other signs, it is required not to directly use paint and ink to mark the tube, but to use an adhesive tape to mark it. In order to avoid that the solvents used in the production of these coatings and inks are not compatible with the rubber material of the tube outer layer

Repairs

Unless the relevant rules and standards may require otherwise in the contract, tubes and tube assemblies should be tested or inspected regularly to ensure that they are suitable for continued use. Pay special attention to the situation at and near the tube connection, as well as the performance degradation of the tube due to normal aging or the damage caused by use under abnormal conditions, abuse or accidents.

The tube with the following defects will be disqualified for use:

a. Perforation, cracking, tearing, exposed reinforcement layer, ozone cracking;

b. Local deformation, blistering, expansion under pressure;

c. There are soft and hard patching on the tube.

When the tube is marked with an expiration date, even if the tube does not show signs of performance degradation, it must be monitored.

tube repair

Generally, the tube should not be repaired if it is broken. However, if damage occurs at the end of the tube and the undamaged part of the tube is long enough, you can cut off the damaged part of the tube and reinstall the pipe joint. After installation, the tube assembly should be tested again. As long as it is possible to repair, such as large-diameter tubes used in the petroleum industry, the economic benefits are considerable. After the repair, the technical indicators of the tube manufacturer must be strictly adhered to and pass the inspection again. If it is necessary, it should also include the electrical performance test of the tube under the tube test pressure.