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WN Flange
SDFL
Custom non-standard flanges for extreme corrosion and ultra-high pressure; precise balanced metallographic heat treatment enhancement; exclusive anti-corrosion treatment for ultra-high salinity conditions; super-large diameter super duplex steel flanges; full traceability test reports for high-end projects; ultra-precision sealing surface grinding for ultra-high pressure; custom parameters for special extreme working conditions.
2507 super duplex steel WNRF Class900 weld neck flange is a top-grade special flange in the industrial anti-corrosion field, developed for ultra-high salinity, high chloride, strong corrosion and ultra-high pressure extreme working conditions. Its anti-corrosion and mechanical properties fully surpass 2205 ordinary duplex steel and 904L stainless steel, approaching the level of nickel-based alloys, serving as the core high-end solution for harsh corrosive and high-pressure conditions. Manufactured strictly per ASME B16.5 Class900 ultra-high pressure standards with thickened S32750 super duplex steel billet and integral closed-die forging, the product undergoes precise metallographic balance heat treatment with perfectly balanced austenite and ferrite ratio, delivering ultimate tensile strength, compression strength and creep resistance, as well as top-level resistance to high-chloride pitting, crevice corrosion, stress corrosion and acid-base scouring. It can long-term withstand saturated salt water, concentrated seawater, high-chloride strong acid mixed media and extreme salt fog corrosion, perfectly adapting to high-risk conditions where ordinary steel, conventional duplex steel and stainless steel fail rapidly. The super-strong tapered stress-relief hub disperses impact stress and alternating loads of ultra-high pressure pipelines, eliminating high-pressure deformation, fatigue cracking and sealing failure. Ultra-precision CNC finishing ensures an ultra-flat sealing surface, achieving long-term zero leakage under ultra-high pressure and strong corrosion with high-end anti-corrosion gaskets. The testable full penetration weld has stable welding performance without post-weld metallographic degradation and supports 100% NDT, fully meeting the highest acceptance standards for deep-sea engineering, high-salinity chemical and extreme environmental protection projects.
Core Selling Points
1. Super duplex steel material with extreme anti-corrosion performance superior to ordinary stainless steel/duplex steel; 2. Class900 ultra-high pressure grade with top-level pressure resistance; 3. Balanced duplex metallography with full-strength strength, toughness and corrosion resistance; 4. Withstands ultra-high salinity, concentrated chlorine and strong acid extreme corrosive media; 5. All-round resistance to stress corrosion, pitting and crevice corrosion; 6. Excellent ultra-high pressure deformation, scouring and fatigue resistance; 7. Stable post-weld metallography for 100% NDT acceptance; 8. Replaces high-priced Hastelloy, dominating cost performance for high-end working conditions.
Application Scenarios
Deep-sea seawater desalination high-pressure systems, saturated salt water chemical pipelines, high-chloride strong acid mixed corrosion pipe networks, extreme salt fog coastal heavy industry equipment, salt lake high-salinity transmission projects, hazardous waste treatment strong corrosion high-pressure pipelines, deep-sea platform process pipelines, extreme-condition environmental desulfurization high-pressure systems.
Why Choose Us
We have mature mass production technology for 2507 super duplex steel flanges, accurately controlling core metallographic balance heat treatment parameters to avoid material performance attenuation. All products adopt genuine S32750 billets with batch-by-batch metallographic inspection, pitting performance test and ultra-high pressure verification to ensure stability under extreme conditions. We provide exclusive super duplex steel MTR certificates, full sets of high-end engineering test reports and third-party authoritative acceptance data, stably serving domestic and foreign high-end deep-sea, high-salinity chemical and extreme environmental protection engineering projects.
Customization Capability
Custom non-standard flanges for extreme corrosion and ultra-high pressure; precise balanced metallographic heat treatment enhancement; exclusive anti-corrosion treatment for ultra-high salinity conditions; super-large diameter super duplex steel flanges; full traceability test reports for high-end projects; ultra-precision sealing surface grinding for ultra-high pressure; custom parameters for special extreme working conditions.
FAQ
1:How long is the custom lead time for stainless steel flanges in Wenzhou?
— 8 to 10 working days
2:What is the fastest delivery time?
— 3 working days
3:Do you support non-standard custom flanges?
— Yes, we do.
4:Can you process special sizes?
— Yes. Max processing size: 4000 mm, Min processing size: 30 mm.
5:Do you have stainless steel flanges of standard sizes in stock?
— Yes.
6:Can we customize flanges based on customer drawings or samples?
— Yes.
7:Will material test certificates and inspection reports be provided for the purchased flanges?
— Yes, they will.
8:Is there a quality warranty for the flange products?
— Yes.
9:How to handle quality defects if they occur?
— Product return and exchange available.
