Food Grade Sanitary and Marine Corrosion Resistant Flanges
Stainless steel flange manufacturers serve two critical markets: food grade sanitary applications and marine applications requiring superior corrosion resistance.
Flange in acciaio inox sanitario per alimenti
Food and beverage, pharmaceutical industries require flanges meeting strict hygiene standards.
Requisiti del materiale
- Grade 304/304L: General food processing
- Grade 316/316L: High corrosion resistance, acidic foods
- Grade 316Ti: Enhanced temperature resistance
- Duplex 2205: Demanding chemical environments
Surface Finish Standards
- Mill Finish: Ra 3.2 microns, non-contact surfaces
- Food Grade: Ra 0.8 microns, product contact
- Pharmaceutical: Ra 0.5 microns, sterile processing
- Electropolished: Ra 0.4 microns, high purity
Sanitary Flange Standards
- ISO 2852: International sanitary fittings
- DIN 11851: European dairy industry
- 3A Sanitary: US food industry standard
- Tri-Clamp: Quick disconnect system
Applicazioni
- Dairy processing
- Beverage production
- Produzione farmaceutica
- Biotech fermentation
Corrosion Resistant Flange for Marine Use
Marine environments present extreme corrosion challenges from saltwater and humidity.
Material Selection for Marine
- 316L: General marine, boat fittings, PREN 24-26
- 2205 Duplex: Offshore platforms, PREN 32-38
- 2507 Super Duplex: Deep sea, PREN 40-45
- 904L: Seawater systems, PREN 34-38
PREN Formula
Pitting Resistance Equivalent Number: PREN = Cr + 3.3 x Mo + 16 x N
- PREN below 25: Mild corrosion resistance
- PREN 25-32: Good corrosion resistance
- PREN 32-40: Very good corrosion resistance
- PREN above 40: Excellent corrosion resistance
Applicazioni marine
- Cantieristica e ingegneria navale
- Piattaforme offshore per petrolio e gas
- Impianti di desalinizzazione
- Sistemi di raffreddamento ad acqua di mare
Protective Measures
- Cathodic Protection: Sacrificial anodes
- Coatings: Epoxy, zinc-rich primers
- Design: Avoid crevices and water traps
- Regular inspection and cleaning
Certificazioni
Food Grade
- FDA 21 CFR 177 (USA)
- EC 1935/2004 (Europe)
- LFGB (Germany)
Marine Certifications
- DNV-GL
- Lloyds Register
- ABS
- CCS
Songhai Flange manufactures food grade sanitary stainless steel flanges and corrosion resistant marine flanges with international certifications.
WhatsApp: +86-18658777855
E-mail: 1007788887@qq.com
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