This 30,000-liter (30 cubic meters) carbon steel/stainless steel oil tank body is a heavy-duty high-quality liquid storage equipment specially built for large-capacity refined oil transport vehicles, hazardous material tank trucks and mobile liquid transport semi-trailers. The tank body is made of high-quality carbon steel or 304 stainless steel, with internal anti-corrosion treatment, featuring excellent oil resistance, tightness and long service life, making it an ideal upgrade or replacement tank body for the global logistics, energy and chemical industries. Highlights: Material: Special high-strength carbon steel tank (standard for refined oil transportation / stainless steel optional for chemical media) Finish: Internal and external anti-corrosion and rust-proof coating, with oil-resistant passivation and anti-seepage treatment on the inner wall Capacity: 30,000 Liters (30 Cubic Meters / 7,925 US Gallons) Tank Structure: Cylindrical pressure-bearing design, built-in reinforced wave-proof partitions, integrated full welding process, 100% passing pressure resistance, leakage and air tightness tests Compatibility: Widely compatible with three-axle oil tank semi-trailers and heavy-duty tractor chassis Insulation: Explosion-proof and anti-static design, complete set of hazard-compliant accessories including emergency shut-off valves and breather valves (thermal insulation layers and heating devices are optional)