Haihao Group Delivers ASTM A815 S31803 Duplex and ASTM A860 WPHY65 Pipe Fittings to UK Customer
Haihao Group has successfully completed the production and shipment of a batch of high-performance ASTM A815 S31803 pipe fittings and ASTM A860 Grade WPHY65 fittings for a customer in the United Kingdom. Manufactured in accordance with ASME B16.9, the order includes concentric reducers, long radius elbows, tees, and heavy-wall fittings designed for demanding industrial pipeline systems.
The project required strict control of ferrite content, mechanical properties, and dimensional accuracy. By meeting these technical specifications, Haihao Group once again demonstrated its capability to manufacture premium alloy pipe fittings for critical applications in offshore, oil & gas, petrochemical, and energy industries.
Shipment Details
| Product | Size | Material | Standard |
| Concentric Reducer | 8″ × 6″ SCH XXS | ASTM A815 WPS S31803 | ASME B16.9 |
| 45° Long Radius Elbow | 2″ SCH XXS | ASTM A815 WPS S31803 | ASME B16.9 |
| 90° Long Radius Elbow | 2″ SCH XXS | ASTM A815 WPS S31803 | ASME B16.9 |
| Equal Tee | 2″ SCH XXS | ASTM A815 WPS S31803 | ASME B16.9 |
| 90° Long Radius Elbow | 8″ SCH XXS | ASTM A860 Grade WPHY65 | ASME B16.9 |
Project Technical Requirements
To satisfy the customer’s engineering specifications, the duplex stainless steel fittings were manufactured with strict quality controls, including:
- Ferrite content maintained between 40% and 60%
- Mechanical properties fully compliant with project requirements
- 45° elbow produced with specified B dimension tolerance
- Back-wall thickness maintained at approximately 5%
- End wall thickness variation controlled within 5%
These requirements ensure excellent corrosion resistance, structural reliability, and consistent welding performance during field installation.
ASTM A860 Gr WPHY65 90 degree elbows manufactured by Haihao Group
Premium ASTM A815 S31803 Pipe Fittings for Corrosive Environments
The primary products in this shipment are ASTM A815 S31803 pipe fittings, manufactured from duplex stainless steel that combines high mechanical strength with outstanding corrosion resistance.
Compared with conventional stainless steel fittings, ASTM A815 S31803 pipe fittings provide significantly higher yield strength while offering excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. This makes them particularly suitable for offshore platforms, subsea pipelines, desalination plants, chemical processing facilities, and marine engineering projects.
Throughout production, every ASTM A815 S31803 pipe fittings component was carefully monitored to maintain ferrite balance and ensure stable metallurgical properties. This level of process control helps customers achieve longer service life and lower maintenance costs in aggressive operating environments.
Heavy-Wall WPHY65 Elbows for High-Pressure Pipelines
In addition to duplex stainless steel fittings, the order included an ASTM A860 Grade WPHY65 90° long radius elbow in SCH XXS.
WPHY65 is widely specified for high-pressure transmission pipelines because of its excellent toughness, strength, and weldability. Manufactured according to ASME B16.9, this elbow is suitable for demanding oil & gas transmission systems where mechanical reliability is essential.
Combining duplex stainless steel fittings with high-strength carbon steel pipeline components allows customers to optimize both corrosion resistance and structural performance across different sections of their piping systems.
Comprehensive Quality Assurance
Every fitting supplied for this UK project underwent strict inspection procedures before shipment, including:
- Raw material verification
- Positive Material Identification (PMI)
- Chemical composition analysis
- Ferrite content testing
- Mechanical property testing
- Dimensional inspection
- Visual and surface examination
- Marking verification
- Packing inspection before export
Haihao Group maintains full material traceability throughout manufacturing, ensuring every product complies with customer specifications and international standards.
Reliable Pipe Fitting Solutions from Haihao Group
With more than 40 years of manufacturing experience, Haihao Group supplies carbon steel, stainless steel, duplex stainless steel, super duplex stainless steel, nickel alloy, and high-yield pipeline fittings to customers around the world.
Our product range includes:
- Butt weld elbows
- Tees
- Reducers
- Caps
- Branch outlets
- Flanges
- Forged fittings
- Customized pipeline components
Whether your project requires ASTM A815 S31803 pipe fittings, high-strength ASTM A860 WPHY65 fittings, or customized solutions with special testing requirements, Haihao Group provides reliable manufacturing, strict quality control, and efficient global delivery.
Contact Haihao Group today for technical support and competitive quotations for your next pipeline project.