Profile: Sierra Sales and Management Co. designs & distributes engineered process supplies, including polyethylene tanks. We market poly safe double wall tank systems, poly containment basins, horizontal and cone bottom tanks & plastic lined steel pipes, fittings & valves. Our polyethylene vessels are rotomolded, seamless and chemical resistant. We also offer crossed linked poly safe tanks and used oil collection tanks. We furnish water tanks, sulfuric acid tanks, sodium hydroxide tanks, sodium hypochlorite tanks, industrial bleach tanks are our specialty. Double wall polyethylene tanks come with integral containment tanks. Poly upright vertical tanks, cone bottoms, conical, horizontal and horizontal leg tanks. We also supply containment and double wall environmentally safe-tank poly chemical storage tanks. Our tanks are rotomolded in hdpe, high density polyethylene, hdxlpe, crosslinked poly, and polypro, polypropylene and fiberglass tanks. We have poly cone bottom tanks as small as 10 gallons up to 11,500 gallons. We stock poly containment basins in sizes from 5 gallons to 10,000 gallons. Poly processing tanks and FRP tanks are our chemical tank (either single wall or double wall tanks.