EN1092-1 S32205 2205 Duplex PN40 RF Threaded Flange is heavy-duty high-pressure forged screwed flange, upgraded corrosion&pressure resistant replacement for 316L threaded flange, designed for medium-high pressure acid-base chemical thread connection piping. Core competitive advantages: dual-phase anti-thread stress cracking, 3 times higher pressure resistance than 316L thread flange, acid&alkali dual anti-corrosion, high toughness thread tooth, anti-thread galling, cost-effective alternative to 2507 super duplex flange.
Balanced ferrite-austenite dual-phase metallographic structure, solves common defect of ordinary stainless thread: stress crack under pressure + corrosive medium coupling effect. Ultra-thickened reinforced flange body reaches PN40 4.0MPa ultra-high pressure bearing capacity, adapt chemical workshop pressure fluctuation, corrosive liquid threaded pipeline frequent disassembly. Professional phase stabilization heat treatment stabilizes thread metallographic structure, thread tooth no galling or deformation under frequent screwing operation.
Deepened optimized BSPT thread groove, improve thread compression sealing effect for corrosive medium. Precision lapped RF face match modified anti-corrosion gasket, high-pressure anti-leakage performance. Whole body passivation anti-chemical scaling, thread gap not easy medium residue corrosion. DN25-DN450 chemical standard size in stock. Factory custom deep thread, anti-galling thread surface, non-standard pressure OEM. Passed third-party duplex inspection, thread burst test. 22-year chemical service life, 20-month heavy-duty factory warranty.
Core Product Advantages:1.Dual-phase anti-thread stress crack;2.PN40 ultra-high pressure threaded connection;3.Acid alkali dual corrosion resistant;4.Anti-galling thread for repeated use;5.High cost-performance replace 2507 duplex flange
Core Spec: Standard: EN1092-1; Pressure: PN40; Face: RF; Thread: Deepened BSPT; Material: S32205 Duplex Steel; Process: Duplex Forging + Heat-treated Threading; Size: DN25-DN450
FAQ: Q: Can 316L thread flange work for high-pressure chemical pipe?
A: No, 316L thread is easy stress crack, 2205 duplex is dedicated for heavy chemical high-pressure thread pipe.
