Our steel series air tanks are available in a multitude of sizes & capacities ranging from 0.5GAL to 5.25GAL. They're ideal for automotive and industrial applications. Made from cold rolled carbon steel (SPCC) for a smooth clean surface. Cold rolling also allows for more precise control of the steel's thickness compared to hot rolling. SPCC is classified as a low-carbon steel, which contributes to good weld consistency and metal formability. Each tank is tested and pressure rated. Tanks are available with a PSI rating of 150 and 200 and are powder coated black for a clean look that will ensure long use. Temperature rated for -40°F ~ +176°F. When ordering specify ports and PSI rating. Custom tank porting is available upon request.