API standard 650 cylindrical tanks knuckles

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 standard 650 cylindrical tanks with anti-corrosion paint. The inlet and outlet valves of API standard 650 cylindrical tanks 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 standard 650 cylindrical tanks 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.

While GB50341 generally takes the weld coefficient as 0.9;When the minimum yield strength of API standard 650 cylindrical tanks steel plate is greater than 390 MPa, take 0.85. The thickness of API 650 tanks is generally smaller than that of GB50341, and this difference is particularly evident in the design of large tanks, where the overall weight of the tanks varies greatly.