Haihao Group Delivers RTJ Flanges and Spectacle Blinds for High-Pressure Oil & Gas Project in the UAE

Haihao Group has successfully completed the delivery of a batch of high-pressure RTJ flanges and line isolation components for an oil & gas project in the United Arab Emirates. The shipment includes spectacle blinds, blind flanges, spacers with spades, and API welding neck flanges, manufactured in full compliance with international standards and sour service requirements.

These products are designed for high-pressure and corrosive operating environments, where material reliability, sealing performance, and dimensional accuracy are critical to safe operation.

Project Supply Scope

The delivered products include the following key items:

• Spectacle Blind

  • Size: 1″

  • Material: ASTM A240 F316L

  • Facing: RTJ

  • Pressure Rating: 2500 LB

  • Standard: NACE MR0175 / ISO 15156

• Blind Flange

  • Size: 2″

  • Material: ASTM A694 F60

  • Facing: RTJ

  • Pressure Rating: 1500 LB

  • Sour Service: NACE MR0175 / ISO 15156

• Spacer with Spade

  • Size: 2-1/16″

  • Material: ASTM A594 F60

  • Facing: RTJ

  • Pressure Rating: 5000 PSI

  • Standard: API 6B

• API Welding Neck Flange (with Jack Screws)

  • Size: 2-1/16″

  • Material: ASTM A694 F60

  • Facing: RTJ

  • Pressure Rating: 5000 PSI

  • Standard: API 6B

  • Pipe Match: 2″ NS, SCH XXS

All components were supplied with full traceability and inspection documentation to support project installation and commissioning.

Designed for Sour and High-Pressure Service

For this UAE project, materials were carefully selected to meet high-pressure and sour service conditions:

• ASTM A240 F316L stainless steel provides excellent corrosion resistance and sealing stability for RTJ applications.

• ASTM A694 F60 and ASTM A594 F60 carbon steels offer high strength and toughness, suitable for elevated pressure ratings up to 5000 PSI.

All products comply with NACE MR0175 / ISO 15156, ensuring safe performance in environments containing hydrogen sulfide (H₂S).

Manufacturing and Quality Control

Haihao Group follows a strict quality management system throughout production, including:

• Chemical composition and mechanical property verification
• Dimensional inspection and RTJ groove accuracy control
• Visual and surface examination
• Material heat number traceability
• EN 10204 Type 3.1 certification

API 6B flanges were manufactured to ensure precise matching with connected piping systems, supporting safe bolted assembly and long-term service reliability.

Trusted Partner for International Energy Projects

With extensive experience in supplying RTJ flanges, API 6B high-pressure flanges, spectacle blinds, and line isolation components, Haihao Group continues to support oil & gas projects across the Middle East with stable quality, technical compliance, and dependable delivery schedules.