The petroleum and natural gas industry involves multiple stages such as upstream exploration and development, midstream storage and transportation, and downstream refining and processing. Equipment in this industry is constantly exposed to harsh conditions including high sulfur content, high chlorine content, high pressure, and high temperature. 2205 duplex steel, with its high strength, excellent corrosion resistance, and good weldability, has become the core material for key equipment in this industry.
In the upstream mining sector, 2205 duplex steel is widely used in submarine pipelines, wellhead equipment, and oil production tree systems. In deep-sea oil and gas extraction, the equipment needs to withstand seawater corrosion, hydrogen sulfide stress corrosion, and high-pressure impacts. The chloride stress corrosion cracking resistance of 2205 duplex steel far exceeds that of 316L, with a yield strength of over 450 MPa, which can effectively reduce the wall thickness of the pipeline and lower the difficulty and cost of laying submarine pipelines. A deep-water gas field project in the South China Sea adopted 2205 duplex steel submarine pipelines, successfully solving the corrosion problems in high-chlorine and high-sulfur environments.
In the midstream storage and transportation sector, 2205 duplex steel is used to manufacture oil and gas transportation pipelines, gathering and transportation lines, and storage tanks. In the wet natural gas transportation environment containing carbon dioxide, hydrogen sulfide, and chloride ions, this material exhibits excellent resistance to uniform corrosion and local corrosion. Compared with carbon steel, 2205 duplex steel does not require the addition of corrosion inhibitors, thereby reducing operating and maintenance costs. Additionally, its excellent low-temperature toughness is suitable for cold regions and polar oil and gas field development.
In the downstream refining and chemical processing sector, 2205 duplex steel is widely used in hydrogenation units, catalytic cracking units, and sulfur recovery units. During the refining process, there are often accompanying corrosions caused by high-temperature sulfides, cyclohexanecarboxylic acid, and chloride ions. The corrosion resistance of 2205 duplex steel in high-temperature sulfur-containing media is superior to that of ordinary stainless steel. Additionally, the material is also applied in pressure vessels such as heat exchangers, towers, and reactors. Its high yield strength allows for thinner wall thickness, enhancing heat transfer efficiency and reducing equipment weight.
Jiangsu Cunrui Metal Products Co., Ltd. We specialize in supplying 2205 duplex steel pipes and plates for the oil and gas industry. Our products strictly comply with international standards such as ASTM A240 and ASTM A790. We offer a wide range of specifications and can provide material certificates and technical support.
If you need any assistance, please feel free to contact our company at any time. We will be more than happy to serve you.