ASTM A815 S32750 Duplex Steel Fitting Elbow 90° LR Buttweld BW B16.9

ASTM A815 S32750 Duplex Steel Fitting Elbow 90° LR Buttweld BW B16.9

ASTM A815 standard is applicable for the manufacture, testing, and inspection of duplex stainless steel fittings used in high temperature, high pressure, and corrosive environments. These fittings include but are not limited to elbows, flanges, tees, pipe caps, and other types. This standard covers various duplex stainless steel materials such as UNS S31803, S32205, S32750, etc., and different materials are suitable for different environmental conditions. For example, S31803 (ferritic austenitic stainless steel) is suitable for low-temperature environments, while S32205 is more suitable for high-temperature and high-pressure environments.

ASTM A815 S32750 material combines the advantages of austenitic stainless steel and ferritic stainless steel, and has excellent corrosion resistance, including high resistance to pitting, crevice, and chloride stress corrosion, as well as general corrosion in high acid resistance;  At the same time, this material has high tensile strength and yield strength, and maintains good elongation and impact toughness, which can withstand extreme working conditions such as deep-sea pressure and high-temperature corrosion; In addition, S32750 also has high thermal conductivity and low coefficient of thermal expansion, which can maintain good dimensional stability and thermal stability in working environments with large temperature changes.

ASTM A815 Chemical Composition

ASTM A815 Heat Treatment

Application:

• Oil and gas industry: ASTM A815 S32750 fittings are commonly used in the manufacture of oil drilling platforms and subsea pipelines. These fittings perform well in harsh environments containing chloride ions, sulfides, and acidity, ensuring safety and stability during oil and gas extraction.
• Marine Engineering: ASTM A815 S32750 fittings are widely used in the manufacturing of FPSOs (Floating Production Storage Units), ships, seawater desalination equipment, and subsea pipelines in marine engineering. Its excellent resistance to seawater corrosion ensures the long-term stable operation of these devices in marine environments.
• Chemical processing industry: In the field of chemical processing, ASTM A815 S32750 pipe fittings have become an ideal material for handling highly corrosive media such as sulfuric acid and phosphoric acid. These fittings can be used to manufacture containers, reactors, pipelines, as well as chemical storage and transportation equipment, effectively extending the service life of the equipment and reducing maintenance costs.
• Other industrial fields: In addition to the above-mentioned fields, ASTM A815 S32750 pipe fittings are widely used in various industries such as power, machinery, electronics, and environmental protection. Especially in situations that require high strength and corrosion resistance, such as heat exchangers, water injection systems, etc., these pipe fittings play an important role.