Duplex & Super Duplex Steel Flanges Manufacturer in the US – Nakoda Steel Industry
Nakoda Steel Industry is a premier Duplex and Super Duplex Steel Flanges Manufacturer, Supplier, and Exporter, now serving the United States with precision-engineered flanges designed for extreme corrosion resistance and mechanical strength. Our products, including Duplex 2205 and Super Duplex 2507 Flanges, are crafted using advanced technology and adhere to global standards like ASTM A182 and ASME SA182. Ideal for oil & gas, chemical, and marine industries, our flanges combine lightweight design, dimensional accuracy, and unmatched durability.
Premium Product Range
Nakoda Steel Industry offers a comprehensive range of flanges tailored for high-performance applications:
- Duplex Steel Slip-On Flanges
- Grades: Duplex 2205, Super Duplex 2507
- Features: Lightweight, precise fit, and resistance to chloride stress corrosion.
- Super Duplex Threaded Flanges
- Applications: Ideal for acidic environments saturated with hydrogen sulfide.
- Manufacturing: Produced using state-of-the-art machinery for superior thread integrity.
- Duplex Steel Weld Neck Flanges
- Design: Optimized for high-pressure systems with excellent fatigue resistance.
- Super Duplex Blind Flanges
- Function: Reliable sealing solution for aggressive media in chemical plants.
Additional Types:
- Socket Weld Flanges
- Lap Joint Flanges
- Ring Type Joint Flanges
- Screwed Flanges
Technical Specifications & Standards
Our flanges comply with ANSI, ASME, DIN, EN, and BS standards, ensuring global compatibility:
Key Specifications:
- Size Range: ½″ (15 NB) to 24″ (1200 NB)
- Pressure Ratings: 150# to 2500#, PN6 to PN64
- Material Grades: Duplex 2205, Super Duplex 2507
- Standards:
- ANSI/ASME B16.5, B16.47 Series A/B, B16.48
- BS 4504, BS 10, EN-1092, DIN
Challenges & Solutions in Duplex Steel Flanges
- Testing Limitations:
- ASTM tests designed for austenitic steels may not fully apply to duplex grades. Pre-testing pickling treatments are critical for accurate results.
- Nitrogen Content Management:
- Low nitrogen in Super Duplex Lap Joint Flanges risks chromium nitride formation post-welding. Nakoda ensures optimal nitrogen levels to maintain austenite stability.
Applications in Critical Industries
- Oil & Gas: Offshore platforms, pipelines, and subsea equipment.
- Chemical Processing: Reactors, heat exchangers, and acid storage tanks.
- Marine Engineering: Desalination plants and shipbuilding.
- Power Generation: High-temperature steam systems.
Rigorous Quality Assurance
Nakoda Steel Industry guarantees excellence through stringent testing protocols:
Certifications & Testing:
- EN 10204/3.1B Certification
- NACE MR 01075 Compliance (sour service environments)
- Material Tests:
- Mechanical: Tensile strength, hardness, flattening, and flaring.
- Chemical: Spectro analysis and PMI (Positive Material Identification).
- Corrosion Resistance: Pitting resistance and intergranular corrosion (IGC) tests.
Why Choose Nakoda Steel Industry?
- US-Based Manufacturing:
- Fast logistics and reliable delivery across the United States.
- Custom Solutions:
- Tailored dimensions, pressure ratings, and surface finishes (e.g., RTJ, RF).
- Competitive Pricing:
- High-quality flanges at market-leading rates.
- Technical Expertise:
- Decades of experience in duplex steel fabrication.
Partner with a Trusted US Supplier
As a leading Duplex & Super Duplex Steel Flanges Manufacturer in the US, Nakoda Steel Industry combines cutting-edge technology with unwavering quality standards. Whether you need corrosion-resistant Slip-On Flanges for chemical plants or high-strength Weld Neck Flanges for offshore drilling, we deliver precision, compliance, and exceptional service.