Profile: Tanko International, LLC is a polyethylene storage tank distributor and modification company. We offer vertical, cone bottom, horizontal, rectangular and custom fabricated tanks, cam locks, valves, bulkheads, hose pipes & PVC fittings. We are also specialized in tank repairing, plastic welding, heat tracing, foam insulation, internal piping, welded rectangular tanks and ladders. We also offer field repairs, tank installations and other services. We are specialized in custom poly tank modifications that include welded fittings, flanges, couplings, man ways, fill lines, internal piping and custom rectangular tanks. We use the best welding equipments that allow us to offer an excellent line of products. This equipment allows us to hand and extrusion weld plastics.