2205 duplex steel plate flange, PN40 high pressure flat flange, acid alkali resistant chemical flange

   2205 Duplex Steel PN40 High Pressure Plate Flange is high-end anti-corrosion and pressure-resistant industrial plate flange, made of standardized 2205 duplex stainless steel with dual ferrite-austenite metal structure, combining the advantages of ferritic steel pressure resistance and austenitic steel corrosion resistance. It is upgraded alternative material for ordinary 304, 316L stainless steel flanges, specially developed for high-pressure, strong corrosive chemical workshop piping working conditions.

   Upgraded thickened integrated flange design reaches PN40 ultra-high pressure grade, maximum 4.0MPa stable working pressure, adapting high-pressure circulating medium, high temperature alternating pipeline operation. This duplex steel flange owns excellent chloride corrosion resistance, acid and alkali erosion resistance, anti-pitting performance, perfectly suitable for brine, strong acid liquid, chemical fertilizer corrosive medium transportation. The sealing face adopts ultra-precision CNC lapping processing, flatness error less than 0.03mm, matching high-pressure winding gasket to realize zero leakage long-term operation. Low magnetic metal property makes it applicable for magnetic-isolated special chemical equipment pipelines.

   Every 2205 duplex flange undergoes solution heat treatment to stabilize internal metal structure, avoid stress cracking under long-term high pressure. Raw material chemical composition test, pressure burst test, corrosion resistance immersion test are completed before leaving factory. Size DN25-DN500 customized stock available. Adopt full penetration welding construction, high structural stability. Widely used in pharmaceutical chemical reaction tanks, salt chemical brine pipeline, fertilizer plant process pipe, high-pressure sewage treatment corrosive pipeline. Provide third-party corrosion test report, 24-month heavy-duty quality warranty, customized non-standard thickness processing support.

Core Spec: Standard: HG20592 / EN1092-1; Pressure: PN40; Face: RF; Material: 2205 Duplex Stainless Steel; Process: Solution Heat Forging; Size: DN25-DN2000

FAQ

Q: Can you accept letters of credit with 30, 60 or 90 days usance?

A: Yes, we can.

Q: Can you issue invoices and cooperate with the chamber of commerce for certification?

A: Yes, we can provide them.

Q: Can you issue Certificate of Origin Form E?

A: Yes, we can provide it.

Q: Can you accept open account (O/A) payment terms?

A: Yes, we can.

Q: Can you provide samples?

A: Yes, some samples are free of charge.

Q: Can you supply products that comply with NACE standards?

A: Yes, we can.