What is a bellows and what is it used for? Which is better, bellows or PFA tubes?

2023-07-15


What is PFA pipe?

PFA pipe is a high performance plastic pipe made of perfluoroalkoxy resin (PFA). It has an extremely high temperature range (-80 ° C to +260 ° C), excellent chemical stability, low coefficient of friction and excellent electrical insulation. Triflurai PFA tube can maintain its physical and mechanical properties in extreme environments, is not easy to be corroded, and the inner wall is smooth, does not adhere to the medium, especially suitable for the transmission of high purity chemicals, strong acid and alkali solutions and high temperature fluids. Because of its excellent properties, it is widely used in pipeline systems and wire and cable sheaths in semiconductor manufacturing, chemical industry, pharmaceutical industry, food processing and other fields.



What is the bellows?

Corrugated pipe is a kind of elastic element formed by a special process, and its structure is characterized by continuous or intermittent corrugated inside. Corrugated pipe materials are diverse, including metal (such as stainless steel, copper, etc.), non-metal (such as rubber, plastic such as PVC, PE, PTFE, PFA, etc.). Using its own elastic and deformation ability, the bellows can absorb axial, transverse or angular displacement within a certain range, and can reduce vibration and noise, and compensate the effect of thermal expansion and contraction. According to different uses, bellows can be divided into pressure bellows, vacuum bellows, expansion bellows, wear-resistant bellows and other types.


屏幕截图 2024-05-23 113536.jpg


What is the use of the bellows?

  1. In the pipeline system, the bellows are used to connect the pipelines between devices to effectively compensate the length changes caused by temperature changes or installation errors, and ensure the normal operation of the pipeline system.

  2. On mechanical equipment, as a flexible connector, it can reduce vibration transmission and protect the equipment from impact damage, such as the bellows in the automobile exhaust system.

  3. In construction projects, corrugated pipes are used as perforated pipes for prestressed tendons to ensure that the prestressed tendons will not be polluted when the concrete is poured, and it is convenient for tensioning operation.

  4. In electrical engineering, the corrugated pipe is used as the protective jacket of the wire and cable to prevent damage to the cable caused by external environmental factors and enhance safety and service life.


 Bellows and PFA pipe, which is better?

The two are not comparable because they do not belong to the same dimension.

Bellows usually refer to pipes with continuous ring corrugated structure made of metal or non-metallic materials, which is a pipe with corrugated structure. PFA pipe, a pipe made of PFA as the main material, is a pipe of PFA material.

Bellows are commonly classified according to fluorine materials: PTFE bellows, PFA bellows, FEP bellows.

Sanfulai PFA pipe according to the structure of the classification: straight PFA pipe, corrugated PFA pipe, special shape PFA pipe (such as elbow, tee, reducing pipe, etc.).

Therefore, because the bellows and PFA tubes do not belong to the same dimension, there is no meaning of comparing good and bad.


  • Sanfulai, high-end fluorine plastic products manufacturer. Supplier of high purity PFA tubes for semiconductor factories

  • This article is originally written by Sanfulai. For more information please subscribe to our channel!


Tel

+86-0757-27680898