S31254 Super Duplex Stainless Steel Blind Flange DN15-DN2000 with 550 MPa Yield Strength for Corrosive Environments
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Brand:
EVEREST
Product Description
S31254 Super Duplex Stainless Steel Flanges
Crafted from UNS S31254 super duplex stainless steel, these premium flanges are engineered for aggressive chloride-rich and acidic environments, delivering unmatched performance in offshore oil & gas, seawater desalination, chemical processing, and pharmaceutical industries.
Key Technical Specifications
- PREN ≥43 (Pitting Resistance Equivalent Number)
- Operating temperature range: -50°C to 300°C (-58°F to 572°F)
- Yield strength: ≥550 MPa (2x stronger than 316L steel)
- High molybdenum (6%) and nitrogen (0.35%) content
- Available sizes: DN15 to DN2000
- Pressure ratings: Class 150 to 2500
Exceptional Corrosion Resistance
Superior resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) in high-temperature, high-pressure conditions up to 300°C (572°F). Defies chlorides, sulfuric acid, brine, and hypochlorite solutions, ideal for seawater cooling systems, bleach plants, and sour gas pipelines.
Ultra-High Strength & Durability
Dual-phase microstructure (austenite + ferrite) delivers excellent impact toughness for high-vibration, high-load environments. Resists erosion and fatigue in abrasive slurry transport and cyclic thermal stress scenarios.
Global Compliance & Standards
Manufactured to ASTM A182, ASME B16.5, EN 1092-1, and NACE MR0175/ISO 15156 standards for sour service (H₂S environments). Full MTC 3.1 material certification with ISO 9001/PED 2014/68/EU compliance.
Available Flange Types
Weld neck, slip-on, blind, threaded, and socket weld designs with precision-machined RTJ (Ring-Type Joint) or RF (Raised Face) surfaces for flawless sealing.
Quality Assurance
Our established Quality Management Department implements comprehensive quality control across all sectors, including QC, QA, and management system supervision. Annual reviews ensure ongoing conformance, effectiveness, and suitability.
Major Project Achievements
Our S31254 flanges have been successfully deployed in numerous critical industrial projects worldwide:
HENGLI Petrochemical
40 million tons/year oil refining integration project
40 million tons/year oil refining integration project
ZHEJIANG Petrochemical
40 million tons/year oil refining integration project
40 million tons/year oil refining integration project
CNOOC Huizhou Refining
22 million tons/year oil refining expansion
22 million tons/year oil refining expansion
Industry Certifications
API-5LD Authentication
ASME Certificate
EU PED & AD2000
Why Choose Our S31254 Flanges?
- Risk-free procurement with 100% dimensional inspection and PMI testing
- Technical expertise including free corrosion compatibility analysis and welding guidance
- Sustainable 100% recyclable material with extended lifecycle
- Fast delivery: Stock availability for standard sizes (DN15-DN600)
- Customizable solutions for specific application requirements
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Everest Technology (Wuxi) Co., Ltd
Location
No. 3, Gangchu Road, Hudai Town, Binhu District, Wuxi City, Jiangsu Province, China
Contact Person
DAVID