DLSS recently fulfilled an urgent order for a Dubai-based equipment manufacturer, delivering five 16″ STD CL600 Weld Neck Raised Face (WNRF) flanges made from ASTM A182 F53 (UNS S32750) super duplex stainless steel. Operating in a high-chloride, highly corrosive seawater environment, the client required ASME B16.5 compliance with an exceptionally fast 15-day lead time.
Project Background
This project required high-strength, corrosion-resistant flanges suitable for high-pressure seawater piping systems. The F53 (S32750) super duplex stainless steel material was chosen for its outstanding resistance to pitting and crevice corrosion, making it ideal for marine, desalination, and offshore oil & gas applications.
Client Challenges
- Extremely Short Lead Time – Delivery within 15 days from order confirmation to shipment.
- Challenging Material – F53 super duplex stainless steel requires advanced machining expertise.
- High-Pressure Rating – Class 600 flanges for long-term reliability in seawater service.
DLSS Solution
1. Material & Standards
- Forged blanks to ASTM A182 F53 (UNS S32750).
- Manufactured to ASME B16.5 dimensions and tolerances.
2. Machining Process
- Precision 37.5° ±2° bevel neck for perfect weld fit-up.
- Serrated raised face finish (0.05 mm depth, 0.45–0.55 mm pitch) for superior sealing performance.
- 20 × Ø41.3 mm bolt holes with accurate positioning.
3. Quality Control
- 100% dimensional inspection within ±0.5 mm tolerance.
- Surface pickling and passivation to enhance corrosion resistance.
- Seaworthy packaging with moisture-proof and impact protection.
4. Rapid Delivery
From material preparation to final shipment, the order was completed in just 15 days, meeting the client’s tight installation schedule.
Results & Feedback
The flanges were shipped immediately after inspection and arrived at Dubai port on time. The client successfully completed installation and praised DLSS for high-end machining capabilities and exceptional delivery speed.
Contact DLSS
If you need super duplex stainless steel flanges or high-standard piping components with rapid delivery, contact DLSS today. We specialize in heat exchanger piping flanges, offshore oil & gas flanges, and marine-grade stainless steel solutions.
Email: info@dlsspipe.com
Website: www.dlsspipeline.com
