Haihao Group Ships API 6A 6BX Duplex Stainless Steel Flanges to the United Kingdom
Haihao Group has successfully completed the production and shipment of API 6A 6BX duplex stainless steel flanges for a valued customer in the United Kingdom.
The order includes high-pressure weld neck RTJ flanges and RTJ spectacle blinds, manufactured from ASTM A815 UNS S31803 duplex stainless steel, specifically designed for demanding oil and gas applications.
Order Overview and Technical Specifications
1. API 6A 6BX Weld Neck RTJ Flange
- Size: 5-1/8″
- Pressure Rating: API 10,000#
- Type: 6BX
- Facing: RTJ (Ring Type Joint)
- Material: ASTM A815 UNS S31803
- Bore: Match to NPS 6-5/8″
- Wall Thickness: 0.51″
- Standard: API 6A
This 5-1/8″ API 6A 10,000 PSI weld neck flange is engineered for high-pressure wellhead and Christmas tree systems. The RTJ sealing surface ensures reliable performance under extreme operating conditions.
API 6A 6BX duplex stainless steel RTJ ASTM A815 UNS S31803 spectacle blind for UK oil an gas project
2. API 6A 6BX RTJ Spectacle Blind
- Size: 4-1/16″
- Pressure Rating: API 5,000#
- Type: 6BX
- Facing: RTJ
- Material: ASTM A815 UNS S31803
- Standard: API 6A
The 4-1/16″ API 6A 5000 PSI spectacle blind flange is designed for pipeline isolation in high-pressure systems. Manufactured from duplex stainless steel, it provides enhanced corrosion resistance and mechanical strength for offshore and subsea environments.
Why ASTM A815 UNS S31803 Duplex Stainless Steel?
ASTM A815 UNS S31803 (commonly known as duplex stainless steel) offers:
- High yield strength compared to standard austenitic stainless steel
- Excellent resistance to stress corrosion cracking
- Superior performance in chloride-rich and offshore environments
- Improved durability in high-pressure oilfield applications
For UK oil and gas projects, duplex stainless steel remains a preferred material for critical pressure-containing components.
Strict Quality Control for API 6A Flanges
All flanges and spectacle blinds were manufactured in full compliance with API 6A requirements. Haihao Group’s quality procedures include:
- Raw material traceability
- Dimensional inspection
- PMI (Positive Material Identification)
- Pressure rating verification
- Final visual and documentation review before export
Each product was carefully packed to ensure safe sea transportation to the United Kingdom.
Supporting High-Pressure Oil & Gas Projects in Europe
With extensive experience in producing API 6A 6BX RTJ weld neck flanges and duplex stainless steel spectacle blinds, Haihao Group continues to serve customers in Europe’s oilfield and energy sectors.
For technical inquiries or project quotations, our team is ready to support your requirements.