What should isolating material for straps of steel tanks be at least?

The isolating material for straps of steel tanks should be at least 1/8 inch thick to ensure adequate protection against corrosion and electrical conductivity. This thickness helps to prevent direct contact between the steel tank and the support structure, which can reduce the potential for galvanic corrosion caused by electrical currents when dissimilar metals come into contact. A thicker isolating material may provide additional benefits, but at a minimum of 1/8 inch, it meets the necessary standards to enhance the longevity and reliability of the tank installation. This thickness is typically specified by industry standards and regulations to ensure safe and effective operation of underground storage tanks.