Duplex Stainless Steel Pipe Fittings Supplied to UK Client
Haihao Group has successfully delivered a batch of duplex stainless steel pipe fittings to a customer in the United Kingdom, supporting a project with strict requirements for corrosion resistance, mechanical strength, and sour service performance.
The shipment includes pipe caps and short radius 90-degree elbows, manufactured in accordance with international standards and fully compliant with NACE MR0175 / ISO 15156 (latest edition). These fittings are designed for high-pressure and corrosive service conditions commonly found in oil, gas, and offshore applications.
SA 815 UNS S31803 90 degree short radius elbows and pipe cap
Product Details and Specifications
The supplied pipe fittings were produced using ASTM SA-815 / SA-815M UNS S31803 duplex stainless steel, a material widely recognized for its excellent combination of strength and corrosion resistance.
Delivered products include:
- Pipe Cap
- Size: DN100 (4″)
- Wall Thickness: SCH XXS
- Material: SA-815 UNS S31803
- Compliance: NACE MR0175 / ISO 15156
- 90-Degree Short Radius Elbow (SR)
- Size: 4″
- Angle: 90°
- Radius: Short Radius (SR)
- Wall Thickness: SCH XXS
- Material: SA-815 / SA-815M UNS S31803
All dimensions and tolerances were controlled to ensure precise fit-up and reliable performance in high-pressure piping systems.
Advantages of SA-815 UNS S31803 Duplex Stainless Steel
UNS S31803 duplex stainless steel fittings are widely used in harsh environments due to their balanced austenitic–ferritic microstructure. Compared with conventional austenitic stainless steels, this material offers:
- Higher mechanical strength
- Excellent resistance to pitting and crevice corrosion
- Improved resistance to stress corrosion cracking
- Proven performance in sour service conditions
These advantages make SA-815 duplex pipe fittings an ideal choice for oil & gas, offshore platforms, and chemical processing systems.
Compliance with NACE MR0175 / ISO 15156
For this UK project, material selection and manufacturing were carefully aligned with NACE MR0175 / ISO 15156 (latest revision) requirements. This ensures the fittings are suitable for environments containing hydrogen sulfide (H₂S), where material integrity and safety are critical.
Each fitting underwent quality verification to confirm chemical composition, mechanical properties, and dimensional accuracy before shipment.
Reliable Pipe Fitting Supplier for UK and European Projects
With extensive experience in supplying duplex stainless steel elbows, pipe caps, and other critical fittings, Haihao Group supports customers across the UK and Europe with consistent quality and technical reliability.
From standard ASME products to customized specifications, we provide dependable piping solutions for demanding industrial applications.