Sprayed Fluorine Lined Storage Tank

Electrostatic fluororesin spraying is an advanced anti-corrosion technology worldwide. The steel surface is degreased and derusted at high temperature, then blasted to form rough texture. A special primer is applied first. Fluorine powder is electrostatically charged and evenly adsorbed on the surface, then heated and fused into a compact protective coating. A 1mm-thick film requires 5 to 6 repeated spraying and baking cycles, with maximum coating thickness up to 2mm. Available fluorine materials include PTFE, PFA, FEP, ETFE and ECTFE. Widely used in chemical, papermaking, food and semiconductor industries. We customize lining materials and processes to suit diverse media and working conditions.

Working Principle

Prior to spraying, remove burrs and impurities, eliminate oil stains and conduct sand blasting to Sa2 grade. Apply primer, then adsorb charged fluorine powder evenly under electric field. High-temperature baking melts powder into firm protective layer. Multiple spraying and baking cycles ensure the coating reaches specified thickness.

Features & Advantages

Applicable media: Acids, alkalis, organic solvents and corrosive substances, pH 1-14

Working pressure: -0.098MPa ~ +2.5MPa

Working temperature: -100℃ ~ +200℃

Manufacturing Standards：GB150-2011, 

HG/T20678-2000, 

ASMEHG/T 4112-2009, 

HG/T 4088-2009

Tank types: Vertical tank, horizontal tank

Performance strengths: High purity with low precipitation, compliant with photovoltaic industry standards.

Strong coating adhesion, resistant to extreme negative pressure and vacuum.

High heat conductivity, suitable for thermal insulation tanks.

Ultra-smooth surface with low friction coefficient.

Structural strengths: Applicable to regular and irregular complex structures.

Service life: Over 10 years under normal operation, no obvious lining deterioration.

Lining Materials

Tank shell: Carbon steel, 304/316L stainless steel, titanium alloy, 2205 duplex stainless steel

Lining material: ECTFE(F30), ETFE(F40), FEP, PFA

Sealing gasket: PTFE, PTFE encapsulated rubber

Fastener: Galvanized bolt, stainless steel bolt, fluorine-lined bolt

Tank Accessories

Pressure balance: Nitrogen sealing device, breather valve, flame arrester

Material access: Fluorine-lined ball valve, electric/pneumatic fluorine-lined ball valve, diaphragm pump

Metering parts: PP metering pump, PVDF metering pump

Observation parts: Fluorine-lined sight glass, fluorine-lined level gauge