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S32205 2205 Duplex Steel PN40 RF Socket Weld Flange High Pressure Chemical Acid-Base Pipeline Fitting
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S32205 2205 Duplex Steel PN40 RF Socket Weld Flange High Pressure Chemical Acid-Base Pipeline Fitting

Custom Standards: ASME, EN, ISO, JIS, or proprietary specs
Material Flexibility: From corrosion-resistant stainless steel (304,316L) to exotic alloys (Inconel, Hastelloy)
Precision Dimensions: Our advanced CNC systems handle diameters from DN 15 to DN 4000 with micron-level accuracy.


 
Availability:
Quantity:
  • SO Flange

  • SDFL

S32205 2205 Duplex Steel PN40 RF Socket Weld Flange High Pressure Chemical Acid-Base Pipeline FittingS32205 2205 Duplex Steel PN40 RF Socket Weld Flange High Pressure Chemical Acid-Base Pipeline FittingS32205 2205 Duplex Steel PN40 RF Socket Weld Flange High Pressure Chemical Acid-Base Pipeline Fitting

EN1092-1 S32205 2205 Duplex Steel PN40 RF Socket Weld Flange is a heavy-duty high-pressure anti-corrosion flange, an upgraded alternative to 316L flanges for harsh chemical working conditions. It adopts ferrite-austenite dual-phase metallographic structure, which perfectly solves the stress cracking defect of ordinary austenitic stainless steel under high-pressure and corrosive medium coupling conditions.
Ultra-high pressure PN40 (4.0MPa) rating, specially used for high-pressure dilute acid, alkaline solution and concentrated brine chemical process pipelines. The ultra-thick forged socket and flange body have ultra-high shear strength and pressure resistance, adapting to frequent pressure surges and strong medium scouring in chemical workshops. After professional duplex steel stabilization heat treatment, the product has low cold crack rate and excellent toughness, suitable for heavy industrial harsh working conditions.
Core Selling Points
  1. Dual-phase structure anti-stress cracking, solve high-pressure corrosion pipeline failure;

  2. PN40 ultra-high pressure bearing, far exceeding ordinary stainless steel pressure limit;

  3. Broad-spectrum acid and alkali corrosion resistance, better than 316L stainless steel;

  4. High shear strength socket, anti-breakage under high-pressure medium impact;

  5. Low thermal expansion coefficient, stable size under high temperature and high pressure;

  6. Cost-effective substitute for super duplex 2507 flange.


Full Available Materials: S32205(2205), S32750(2507), 904L, F316L high anti-corrosion alloy steel
Applicable Industries: High-pressure chemical workshops, acid-base reaction equipment pipelines, brine treatment engineering, petrochemical process pipelines, heavy corrosion industrial systems
Why Choose Us
Our factory has professional duplex steel forging and heat treatment production lines, independent duplex metallographic inspection laboratory. All 2205 SW flanges undergo phase stabilization heat treatment to ensure dual-phase structure uniformity. Pass third-party hydraulic burst test and metallographic detection, complete heavy-duty industrial certification. 20-month heavy corrosion warranty, long-term supporting high-pressure chemical engineering projects.
Customization Capabilities (8 Items)
  1. Duplex steel phase stabilization heat treatment customization

  2. PN40/PN63 ultra-high pressure structural reinforcement;

  3. Heavy corrosion medium special anti-corrosion lining customization;

  4. High-pressure explosion-proof sealing surface precision processing;

  5. Duplex steel exclusive laser marking and parameter engraving;

  6. Non-standard high-pressure small-bore size one-to-one customization;

  7. Heavy industrial shock-proof and pressure-resistant packaging;

  8. Customized third-party duplex metallographic test report.


FAQ

1:Who Are We?

We are a comprehensive industrial and trading supplier integrating R&D, production, sales and import & export services, specializing in stainless steel valves and flanges.

2:How Do We Guarantee Quality?

All products are manufactured in compliance with international and domestic standards including ASME, DIN and GB, and undergo rigorous material composition testing, dimensional inspection, as well as hydrostatic and air pressure testing.

3:Are You a Trading Company or Manufacturer?

We are a professional manufacturer.

4:What Services Can We Offer?

We provide flexible OEM & ODM customization services. We can fabricate products of various specifications, pressure classes and connection types in accordance with customers’ drawings, project requirements or special working conditions.

5:Why Choose Us Over Other Suppliers?

We have built a mature global supply chain system featuring consistent stable quality, competitive direct factory prices, fast lead times and full-spectrum import and export services.

Q: Can 316L SW flange replace 2205 for high-pressure chemical pipes? 

A: No, 316L is prone to stress cracking under high-pressure corrosion, while 2205 duplex steel ensures long-term stable operation.



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