API standard 650 carbon and low-alloy steel tanks carbon steel anchor straps
API 650 petroleum storage tank body design is mainly the design of tank bottom, API standard 650 carbon and low-alloy steel tanks tank top and tank wall, and the design of tank wall is particularly important. As the main pressure bearing part of API 650 petroleum storage tank, the tank wall bears loads including liquid pressure, wind pressure, seismic load, opening stress, etc. The calculation of such loads is explained in detail in various API standard 650 carbon and low-alloy steel tanks storage tank design standards. But in addition, the API 650 petroleum storage tank wall also bears the push-pull force and torque of the connected pipeline.
API 620 crude oil tank piping materials made according to ASTM A333 and A350 may be used at API standard 650 carbon and low-alloy steel 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.
The lip seal of floating roof storage tank, API standard 650 carbon and low-alloy steel tanks relies on the sliding contact between elastic lip and tank wall. This kind of seal has strong applicability, but the requirements of manufacturing technology and material selection are high, and the determination of elastic seal also exists. The secondary seal of floating roof storage tank, API standard 650 carbon and low-alloy steel tanks is to add a seal on the basis of primary seal. It is proved by experiments that the secondary seal can reduce the liquid consumption by more than 50%, and has a more significant effect in safety.
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