Duplex A815 UNS S3180 Welded BW 90 Degree 20”and 24”Sch 10s Seamless Stainless Steel Pipe Fitting Elbow

• Overview of S31803 Duplex Stainless Steel

  S31803 duplex stainless steel is a nitrogen-enhanced alloy composed of 21% chromium, 2.5% molybdenum, and 4.5% nickel. This combination ensures superior strength and corrosion resistance. A significant feature of S31803 duplex steel is its yield strength, which is double that of traditional austenitic stainless steels. This characteristic allows for lighter designs in product manufacturing and offers a cost advantage over 316/317L stainless steels. Optimally used within the temperature range of -50°F to +600°F, the alloy is also viable beyond this range, though limitations may apply, especially in welded structures. S31803 duplex steel's unique properties make it the most popular grade of duplex steel, widely used across various applications.

  Physical and Mechanical Properties of S31803 Duplex Stainless Steel

  Density: The density of S31803 duplex steel is 8.0 g/cm³.
  Tensile Strength: The tensile strength (σB) is at least 620 MPa, indicating the maximum stress it can withstand before failing.
  Yield Strength: The yield strength (σ0.2) is at least 450 MPa, marking the stress at which permanent deformation begins.
  Elongation Rate: The elongation rate (δ) of at least 25% demonstrates the steel’s ability to stretch under tension, highlighting its ductility.
  This comprehensive set of properties demonstrates why S31803 duplex steel is highly favored for its robustness and versatility in challenging environments.

• Chemical Composition

• Elbow Size

• Application

• Our company can produce carbon steel, stainless steel, and alloy steel pipe fittings according to standards such as ASME/ANSI, JIS, DIN, ISO etc. The varieties include equal diameter tees, reducing tees, tees, elbows, cross, concentric reducer, eccentric reducer etc.

We provide the very best quality pipe and fittings, prompt delivery and reliable services at competitive prices.

Established in 2018 with a registered capital of 300 million yuan, Beijing Hownew Energy Technology Group Co., Ltd. owns three holding subsidiaries: Cangzhou Yuantuo Piping Equipment Co., Ltd., Beijing Shenfupeng Piping Equipment Development Co., Ltd., and Hownew Technology (Hong Kong) Co., Ltd. Hownew Group is a comprehensive enterprise integrating technology research and development, product manufacturing, production and sales, plus installation and maintenance. It specializes in providing professional piping and pipe fittings, as well as piping design, manufacturing, and installation and maintenance services for domestic and international boiler, power, chemical, gas, and solar thermal industries.
The company always adheres to the working attitude of "honesty and realism, professionalism and concentration, pragmatism and efficiency", and takes technical strength as the foundation, resource background as the basis for development, and customer needs as the future trend. It closely follows the characteristics of industry technology and industry development, and continuously optimizes the design. The company is dedicated to providing customers with the highest quality and most satisfactory services.

Hownew Technology (Hong Kong) Co., Ltd.: In 2019, in response to the national initiative of "One Belt and One Road" and the Group's expansion into international markets, Hownew Group established Hownew Technology (Hong Kong) Co., Ltd. in Hong Kong. This serves as the Group's platform for international business development. The company mainly offers pipes and pipe fittings (carbon steel, stainless steel, alloy steel) such as elbows, tees, bends, reducers, and crosses to industries such as power, petrochemical, chemical, petroleum, gas, solar thermal, and shipbuilding. All products adhere to American standard ASME (ANSI), European standard EN, German standard DIN, Japanese standard (JIS), and can also be customized according to specific customer needs.