liquid storage tanks bulk storage tanks intermediate bulk containers LIQUID STORAGE TANKS CO Container systems offers a complete range of gas and liquid storage tanks to meet your specific needs! plastic tanks this manufacturer produces include chemical tanks, polypropylene tanks, double wall storage tanks, plastic storage tank and chemical storage tanks.   ACO Conical Bottom liquid storage tanks assure excellent chemical and corrosion resistance. and total Drainage. These liquid storage tanks are made of a durable, one-piece seamless construction. Specific gravity of 1.5 (1.9 or 2.2 available upon request). Manufactured from LLDPE (linear Polyethelene) plastic and the XLPE (cross-linked Polyethylene) is also available.