Sierra Sales designs, engineers and supplies poly safe double wall tank configurations to 6500 gallons, cone bottom polyethylene tanks to 11,500 gallons, flat bottom poly processing tanks, upright or vertical polyethylene in crosslinked (XLPE) or high density linear polyethylene (HDLPE), in capacities to 16,500 gallons.
⌖ PO Box 321, Perkasie, United States of America