Haihao Group Ships ASTM B564 UNS N08825 Flanges to Turkey
When a Turkish engineering company required high-performance piping components for a sour gas project, Haihao Group was selected to supply the complete package of ASTM B564 UNS N08825 flanges and flanged outlet pipe branch fittings.
The project demanded materials capable of resisting acidic and chloride-rich media, where conventional stainless steels could not ensure long-term performance.
Leveraging decades of manufacturing expertise, Haihao delivered a full set of nickel alloy flanged fittings designed for Class 150–300 pressure ratings, ensuring both mechanical reliability and corrosion integrity under extreme service conditions.
Inconel 825 nickel alloy flanges and branch fittings supplied by Haihao Group
Material Excellence: Inconel 825 (UNS N08825)
The products are manufactured from Nickel Alloy Inconel 825, corresponding to ASTM B564 UNS N08825 — a material renowned for its excellent resistance to sulfuric acid, phosphoric acid, and seawater corrosion.
Each flanged outlet pipe branch fitting was designed according to MSS SP-97 and ASME B16.5, with raised face (RF) finishing to RA 125–250 μin.
This meticulous surface treatment ensures superior sealing performance, especially in high-pressure nickel alloy piping systems.
“For sour gas and chemical processing plants, Inconel 825 remains one of the most stable and dependable materials available,” noted Haihao’s senior materials engineer.
Project Deliverables
Haihao’s supply to Turkey included several key components:
| Product Type | Specification Standard | Material | Pressure Class | Service |
|---|---|---|---|---|
| Flanged outlet pipe branch fittings | MSS SP-97 / ASME B16.5 | ASTM B564 UNS N08825 | CL150 / CL300 | Sour service |
| Blind pipe flanges | ASME B16.5 | ASTM B564 Inconel 825 | CL150 | NACE MR0175 |
| Spectacle line blinds | ASME B16.48 | Nickel Alloy Incoloy 825 | CL150 | ISO 15156 |
All items were supplied with EN 10204 Type 3.1 certification, confirming chemical composition, mechanical properties, and heat treatment traceability.
Manufacturing Precision at Haihao Group
At Haihao Group’s production facilities, each component undergoes a strict multi-stage inspection process:
- Raw Material Testing – Chemical and mechanical verification of nickel alloy billets.
- Hot Forging & Heat Treatment – To refine grain structure and enhance corrosion resistance.
- CNC Machining – Ensuring precise dimensional tolerance on flanged faces and threads.
- Surface Finish Control – Achieving consistent RA 125–250 μin for tight sealing performance.
- Final Inspection – Visual, dimensional, and pressure tests prior to certification.
This robust quality assurance system ensures that every ASTM B564 UNS N08825 flange leaving Haihao’s factory meets the demanding standards of offshore platforms, chemical plants, and gas processing facilities.
Reliable Partner for Nickel Alloy Piping Solutions
Haihao Group’s long-standing expertise in nickel alloy fittings and flanges has positioned the company as a trusted supplier to EPC contractors and end users worldwide.
From Inconel 625, Incoloy 825, to Hastelloy C276, Haihao provides tailor-made solutions for high-temperature and high-corrosion service applications.
Every component supplied to Turkey reflects Haihao’s mission — to deliver precision, reliability, and safety in every connection.
About the Product
ASTM B564 UNS N08825 Flanges are forged components widely used in sour gas service, acid handling, and marine applications.
They provide outstanding resistance to pitting, stress-corrosion cracking, and crevice attack, ensuring long-term reliability in aggressive environments.
Flanged outlet pipe branch fittings, often referred to as flanged olets, allow safe and efficient branch connections in pipelines while maintaining structural integrity and pressure containment.