Project Overview
This project involved the supply of oil and gas flanges for a North American upstream pipeline system operating under high pressure and elevated temperature conditions.
The flanges were used in critical transmission sections where pressure resistance, material integrity, and compliance with ASME standards were essential.
DHX was selected based on its experience in manufacturing high-pressure oil and gas flanges and its ability to meet strict inspection and export packaging requirements for international delivery.
Customer Requirements
The client, a major oil contractor, required oil and gas flanges that deliver:
- Complete inspection documentation and undamaged delivery.
- High‑pressure sealing in HPHT environments per ASME standards.
- Corrosion resistance for long‑term operation in sulfur environments.
DHX Solution
We provide our customers with specialized industrial flange solutions for the oil and gas industry, conforming to the following specifications:
- Transport Protection: Plastic caps for sealing surfaces and bolt holes; reinforced export crates ensure no transit damage.
- Material Selection: Carbon and alloy steels such as ASTM A105 and P265GH selected for strength and corrosion resistance.
- Reinforced Design: Flange wall thickness matched or exceeds connected pipe wall to eliminate weak pressure points.
Technical Specifications
| Parameter | Technical Specifications |
|---|---|
| Standard | ASME B16.5 / ASME B16.47 |
| Type | Weld Neck, Slip‑On, Blind, Threaded |
| Material Grade | A105, P265GH, Alloy Steel |
| Pressure Class | Class 150–600 |
| Dimensional Tolerance | ±0.5 mm |
| Surface Finish | Ra 1.6 μm |
| Testing | 100% Ultrasonic + Magnetic Particle |
| Manufacturing | Forging & CNC Machining |
Customer Feedback on Oil and Gas Flanges
“The DHX team delivered oil and gas flanges with excellent thickness control and corrosion performance. Packaging ensured zero transit damage, making DHX a reliable partner.”
Conclusion
DHX’s oil and gas flanges solutions combine quality materials, reinforced design, strict testing, and secure delivery, ensuring safe and reliable operation in critical pipeline systems.