Sierra Sales designs, engineers and supplies safe poly processing tanks, polyethylene, polypropylene & fiberglass (FRP) chemical storage tanks. PE tanks for corrosives, safe poly processing tanks, vertical, cone bottom, open top, horizontal, safe-tanks, double wall tanks, full drain tanks, IBC, SUMO, fittings & accessories. Poly tanks for sodium hypochlorite, sulfuric acid, caustic soda, hydrochloric acid, and secondary containment are our specialty. Lined steel products & accessories are available in any number of fluoroplastics.