DIN 2527 blind flanges in Duplex 2205 or Super Duplex 2507 are high-strength sealing solutions for aggressive industrial environments. These solid discs are used to terminate piping runs in desalination, chemical processing, and offshore oil and gas systems. By utilizing duplex alloys, these flanges offer twice the mechanical strength of standard stainless steel and exceptional resistance to pitting and stress corrosion cracking. They provide a reliable, high-pressure barrier even in chloride-rich seawater.
Technical attributes
Standard: DIN 2527
Material Grade: Duplex 2205 / Super Duplex 2507
Material Number: 1.4462 / 1.4410
Flange Type: Blind (Vorschweißflansch-Blind)
Pressure Rating: PN 6 to PN 100
Size Range: DN 10 to DN 1000
Manufacturing: Forged and Machined
Facing Type: Form B (Raised Face) / Form C
Yield Strength: Min 450 to 550 MPa
Tensile Strength: 620 to 800 MPa
PREN Value: Min 35 (2205) / Min 40 (2507)
Chromium Content: 21.0 to 26.0 percent
Nickel Content: 4.50 to 8.00 percent
Molybdenum: 2.50 to 5.00 percent
Microstructure: Ferrite-Austenite 50/50
Hardness: Max 290 HBW
Certification: EN 10204 3.1
Service Environment: Seawater / Marine / Acidic
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
