Rubber-lined pipes and plastic-lined pipes

Mar 20, 2023

rubber lined pipes

Common ground：

  1. The substrate is the same: both are carbon steel pipes
  2. The structure is similar: they are all lined pipes, steel-rubber (plastic)/lined plastic pipes composite
  3. The anti-corrosion performance is close: it can work normally in most acid-base medium environments
    Differences：
    1.Processing technology: Rubber-lined pipes generally adopt manual bonding and pressure vulcanization processes; plastic-lined pipes generally adopt equipment heating and overall rotational molding, and the main process steps can be completed with the help of equipment. Therefore, the production efficiency of plastic-lined pipes is obviously higher than that of rubber-lined pipes.
    1. Physical properties: Rubber-lined pipes inherit the excellent characteristics of rubber, and have outstanding wear resistance and temperature resistance while being resistant to chemical corrosion. In addition to chemical corrosion resistance, plastic-lined pipes are close to rubber-lined pipes. Abrasion resistance, temperature resistance, bonding strength, etc. are not as good as rubber-lined pipes.
  4. Weather resistance: Practice has proved that rubber has stable performance in harsh environments, so rubber-lined pipes have strong weather resistance, while the weather resistance of plastic-lined pipes is not as good as that of rubber-lined pipes.
  5. Service life: Since rubber-lined pipes are generally bonded internally with rubber sheets, there must be lap joints, while plastic-lined pipes are formed at one time. Therefore, the performance of plastic-lined pipes in general chemical water transportation and circulating chemical water treatment is more stable, and the service life will be longer; and under the conditions of abrasive media, rubber-lined pipes will be more durable.
  6. Cost: Rubber-lined pipes and plastic-lined pipes have obvious differences in cost due to the difference in material and processing technology. In terms of overall cost, plastic-lined pipes have obvious advantages over rubber-lined pipes.