API Std 650 carbon steel tank temperature

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After using for a certain period of time, it is necessary to check the corrosion protection of the metal oil tank and paint the outer wall of the API Std 650 carbon steel tank with anti-corrosion paint. The inlet and outlet valves of API Std 650 carbon steel tank shall be inspected and maintained regularly to ensure they are in good condition. Oil tank will produce a lot of dirt when it is stored for a long time. Usually, the cleaning cycle of metal oil tank is about three to five years.

API 620 crude oil tank piping materials made according to ASTM A333 and A350 may be used at API Std 650 carbon steel tank design metal temperatures no lower than the impact test temperature required by the ASTM specification for the applicable material grade without additional impact tests. For temperatures below those allowed by the ASTM specification, the following paragraph shall apply.