Petrochemical Solutions
Corrosion-resistant solutions for refinery and downstream processing.
Overview
Petrochemical facilities operate with aggressive chemical exposures, elevated temperatures, and continuous duty cycles. Flanges connect distillation columns, heat exchangers, reactors, and product storage systems. Corrosion resistance and dimensional stability are paramount because downtime costs exceed $1M per hour in many operations.
Applications
Distillation column overhead/sump connections
Heat exchanger inlet/outlet flanges
Reactor vessel nozzles
Product blend drum connections
Alkylation unit piping
Hydrotreating systems
Aromatic extraction processes
Relevant Standards
- •ASME B16.5 (standard and raised face)
- •ASME B16.47 (large diameter columns)
- •NACE MR0175 (sour service compliance)
- •API 594 (check valves - applicable flanges)
Material Grades
ASTM A105
carbon steel base
ASTM A182 F304L
non-magnetic stainless
ASTM A182 F316L
enhanced molybdenum
ASTM A182 F321
titanium-stabilized
Duplex 2205
chloride resistance
Super-duplex 2507
high-chloride environments
Common Pressure Classes
150
PSI
300
PSI
600
PSI
900
PSI
1500
PSI
Typical Service Specifications
Petrochemical flanges operate across 150-1500 PSI with temperatures from -20°F to 800°F. Sour service (H2S) requires NACE MR0175. Stainless steel grades must resist sulfidic corrosion and chloride pitting. Complete MTR documentation with corrosion testing certificates often required.
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