CRA (Стійкий до корозії сплаву) плаковані або футеровані сталеві труби - це композитні труби, розроблені для забезпечення підвищеної стійкості до корозії та механічних властивостей порівняно з традиційними сталевими трубами. They are used in applications where the working environment is highly corrosive or demanding, таких як нафта і газ, нафтохімічної, та хімічної промисловості.
У CRA clad or lined steel pipes, a layer of corrosion-resistant alloy (CRA) is either metallurgically bonded to the steel pipe (одягнений) or inserted as a liner inside the steel pipe (lined). The CRA layer provides excellent protection against corrosive media, while the steel pipe offers structural strength and support.
CRA Clad Steel Pipe
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 hot rolling, explosive bonding, or weld overlay cladding. The resulting composite pipe has a strong metallurgical bond 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, наприклад, нержавіюча сталь, сплави нікелю , 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.
Застосування Одягнений CRA or Lined Steel Pipe
CRA clad or lined steel pipes are typically used in industries and applications where corrosion resistance is critical, наприклад:
- Oil and gas production and transportation systems, especially in sour service environments containing hydrogen sulfide (Н2Ѕ) and carbon dioxide (CO2).
- Petrochemical processing facilities, where corrosive chemicals are used or produced.
- заводи хімічної обробки, which handle various corrosive media.
- Offshore platforms and subsea pipelines, where corrosive seawater and high pressures are present.
- потужності виробництва електроенергії, 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, budget constraints, and manufacturing methods available.
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