Clad WNRF Flanges to Singapore | UNS N06625 Overlay Weld Neck Flanges by Haihao Group

Haihao Group has successfully completed the production and shipment of a batch of clad WNRF flanges to Singapore, engineered for demanding offshore and corrosive service environments. These weld neck raised face (WNRF) flanges feature a 3mm corrosion-resistant overlay using UNS N06625 (Inconel 625), ensuring superior durability and long-term performance.

Project Overview: Clad WNRF Flange to Singapore

This shipment of clad WNRF flanges includes multiple sizes, pressure classes, and material combinations:

Product Specifications:

• Flange Type: Weld Neck Raised Face (WNRF)
• Standard: ASME B16.5
• Cladding Material: UNS N06625 (3mm overlay)
• Base Materials:
  • ASTM A105
  • ASTM A694 Gr. F65

Sizes & Pressure Ratings:

• 6″ to 16″
• Class 150 / 300 / 600
• Thickness: SCH 10 / SCH 20 / STD / custom inch thickness

These clad WNRF flanges are tailored for high-performance pipeline systems requiring corrosion resistance and mechanical strength.

Why UNS N06625 Cladding?

The clad WNRF flanges uses UNS N06625 overlay (commonly known as Inconel 625), which provides excellent resistance to aggressive environments.

Key Benefits:

• ✔ Outstanding corrosion resistance (chlorides, sour service)
• ✔ High strength at elevated and low temperatures
• ✔ Extended service life in offshore and chemical environments
• ✔ Cost-effective alternative to solid alloy flanges

NACE Compliance and Material Performance

All clad WNRF flanges to Singapore products meet strict NACE requirements for sour service environments.

Key Material Controls:

• Low sulfur content for improved resistance to cracking
• Full heat treatment applied
• Suitable for H₂S-containing environments

Impact Testing Requirements:

• ASTM A105:
  • Temperature: -20°C
  • Impact Value: Avg. ≥ 27J
• ASTM A694 Gr. F65:
  • Temperature: -46°C
  • Impact Value: Min. 20J, Avg. ≥ 27J

These properties ensure that the clad WNRF flange can perform reliably in low-temperature and high-stress conditions.

Inspection and Quality Assurance

To guarantee performance, each clad WNRF flange undergoes strict testing:

• ✔ 100% Ultrasonic Testing (UT)
• ✔ Metallographic Examination
• ✔ Dimensional Inspection
• ✔ Surface Quality Check

This ensures internal integrity and consistent cladding quality across all flanges.

Applications

The clad WNRF flanges supplied in this project is widely used in:

• Offshore oil & gas platforms
• Petrochemical plants
• LNG and subsea pipelines
• Sour service pipeline systems

Why Choose Haihao Group?

As a leading manufacturer of clad WNRF flanges, Haihao Group provides:

• Advanced weld overlay cladding technology
• Strict adherence to ASME and NACE standards
• Rich experience in Southeast Asia and offshore projects
• Fast delivery and reliable technical support

We help clients reduce corrosion risks and extend equipment life.

Request a Quote Today

If you are looking for a trusted supplier of clad flanges, Haihao Group is ready to support your project.

👉 Contact us now for a fast quotation and expert consultation.