RTJ Weld Neck Flanges Supplied to UAE Oil & Gas Project
Haihao Group has successfully delivered a batch of RTJ weld neck flanges to a customer in the United Arab Emirates, supporting a high-pressure oil and gas project with strict material and compliance requirements. The supplied flanges are designed for severe service conditions, including high pressure, sour environments, and critical pipeline connections.
All products were manufactured, inspected, and certified in full accordance with ASME B16.5, API 6A, and NACE MR0175 / ISO 15156 standards.
API 6A 10K RTJ weld neck flange ASTM A694 F60
Scope of Supply
The shipment includes multiple specifications of WN RTJ flanges, covering both ASME and API applications:
- 2″ Class 2500 RTJ Weld Neck Flange
- Bore: SCH 160
- Material: ASTM A105N
- Standard: ASME B16.5
- Application: High-pressure carbon steel piping systems
- 2-1/16″ API 10K RTJ Weld Neck Flange
- Pressure Rating: API 10K (10,000 psi)
- Material: ASTM A694 F60
- Standard: API 6A – 6BX
- PSL: PSL 3
- Application: Wellhead and high-pressure oilfield equipment
- 2″ Class 2500 RTJ Weld Neck Flange (Low Temperature Service)
- Bore: SCH 160
- Material: ASTM A350 LF2 Class 1
- Standard: ASME B16.5
- Application: Low-temperature and sour service pipelines
Materials and Performance Advantages
The selected materials ensure strength, reliability, and long-term performance in demanding environments:
- ASTM A105N
- Widely used forged carbon steel
- Suitable for high-pressure ASME B16.5 flange applications
- ASTM A694 F60
- High-strength forged steel for API 6A flanges
- Excellent mechanical properties for wellhead systems
- ASTM A350 LF2 Class 1
- Low-temperature carbon steel
- Maintains toughness in cold operating conditions
All materials comply with NACE MR0175 / ISO 15156, making them suitable for sour gas and H₂S-containing environments.
Standards, Inspection, and Certification
Haihao Group strictly followed project-specific inspection and documentation requirements, including:
- ASME B16.5 – Pipe flanges and flanged fittings
- API 6A / API 6BX – Wellhead and Christmas tree equipment
- NACE MR0175 / ISO 15156 – Materials for sour service
- BS EN 10204 Type 3.1 material certification
Each flange underwent dimensional inspection, material verification, and full traceability control prior to shipment.
Typical Applications
These RTJ weld neck flanges are commonly used in:
- Onshore and offshore oil & gas pipelines
- High-pressure process piping systems
- Wellhead and upstream production facilities
- Sour service and critical pressure containment systems
Trusted RTJ Flange Manufacturer for UAE Market
With extensive experience supplying ASME B16.5 Class 2500 flanges and API 6A RTJ flanges to the Middle East, Haihao Group continues to support UAE oil and gas projects with reliable products, strict quality control, and full compliance with international standards.