Что такое CRA плакированная или облицованная стальная труба?

CRA (Устойчив к коррозии сплава) плакированные или футерованные стальные трубы — это композитные трубы, предназначенные для обеспечения повышенной коррозионной стойкости и механических свойств по сравнению с традиционными стальными трубами.. They are used in applications where the working environment is highly corrosive or demanding, например нефть и газ, нефтехимической, и химическая промышленность.

в CRA clad or lined steel pipes, a layer of corrosion-resistant alloy (CRA) is either metallurgically bonded to the steel pipe (Клад) or inserted as a liner inside the steel pipe (lined). The CRA layer provides excellent protection against corrosive media, while the steel pipe offers Структурная прочность and support.

CRA плакированная стальная труба

CRA clad steel pipes are manufactured by bonding a corrosion-resistant alloy layer onto a carbon steel or low-alloy steel base. This can be done through methods like горячая прокатка, взрывная связь, или приварить наплавку. The resulting composite pipe has a strong металлургическая облигация between the base material and the CRA layer, ensuring excellent durability and performance.

CRA Lined Steel Pipe

CRA lined steel pipes consist of a corrosion-resistant alloy liner inserted into a metallic outer pipe. The liner can be made from various corrosion-resistant materials, например, нержавеющая сталь, сплавы никеля , or other specialized alloys depending on the application’s needs. The liner protects the outer pipe from corrosive media while maintaining the structural integrity of the overall piping system.

Применение CRA одетый or Lined Steel Pipe

CRA clad or lined steel pipes are typically used in industries and applications where corrosion resistance is critical, например:

1. Oil and gas production and transportation systems, especially in sour service environments containing сероводород (СЕРОВОДОРОД) и углекислый газ (CO2).
2. Petrochemical processing facilities, where corrosive chemicals are used or produced.
3. химические заводы, which handle various corrosive media.
4. Offshore platforms and subsea pipelines, where corrosive seawater and high pressures are present.
5. объекты электрогенерации, where high temperatures and corrosive environments are encountered.

The choice between CRA clad or lined steel pipes depends on factors such as the specific application requirements, desired performance, ограничения бюджета, and manufacturing methods available.