The shape of daily-use oil tank is round at room pressure. The tank body is welded to shape with the material of Q-235 steel plate, and the thickness of steel plate is 5mm. The unleaky tank is qualified products after the welding line grind and the water filling pressure test. Exterior surface of daily-use oil tank is painted with anti-corrosion base coat and magnetic mixed paint. At the same time, the surface of oil tank is treated with the electrostatic spray coating to guarantee the tank body uncorrosion.