Polypropylene Tanks — Built for Heat, Built for Aggressive Duty

When heat and chemistry push HDPE and XLPE past their limits, Liberty CES specs polypropylene. Walls up to 3.5”, service temps to 200 °F, and immunity to the nastiest acids and caustics.

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Polypropylene cylindrical tank

The Case for Polypropylene

  • High-temp performance: service up to 200 °F water / 180 °F chemicals.
  • Chemical immunity: resists pH 0–14, acids, alkalis, leachates.
  • Wall thickness: extrusion-wound up to 3.5”.
  • Longevity: outlasts steel/fiberglass by decades; weldable/repairable.

Design Options — Spec’d to Your Application

Cylindrical or rectangular, open or closed, cone or flat bottoms — Liberty builds PP tanks your way. Add mixers, ladders, manways, heaters, and handrails for a complete system that won’t fail where you need it most.

Heat Band Chart — HDPE vs XLPE vs PP

HDPE: safe to ~120 °F (potable water, farm chem).
XLPE: safe to ~150 °F (oxidizers, sulfuric at ambient).
Polypropylene: safe to ~200 °F water / 180 °F chemicals.

When heat rises, PP survives.

Longevity Curve — Tank Life Expectancy

  • Steel: 5–10 yrs, repaint & reline every cycle.
  • Stainless: 10–20 yrs, chloride stress cracking risk.
  • FRP: 7–15 yrs, resin blistering, delam, hard to repair.
  • Roto HDPE/XLPE: 7–15 yrs, elephant’s foot, UV aging.
  • Extrusion PP: 20–30+ yrs, weldable/repairable, 3.5” walls.

Buy once vs buy twice: polypropylene stretches the curve beyond 25 years.

The Liberty CES Advantage

  • Failure-proof by design: every spec reverse-engineered from fines, shutdowns, compliance risks.
  • Invisible risk transfer: EPA fines, OSHA issues, unplanned changeouts — shifted off your shoulders.
  • James’ guarantee: when he signs off, it’s because hidden costs are already neutralized.

Need a tank that thrives in heat and aggressive chem duty?

Talk to James

Explore All Chemical Water Storage Tank Options

From flat bottom to FRP, we engineer tanks for every duty cycle and chemical environment.