API Std 650 welded tanks for oil storage compartment plates

The outer layer of API 650 tank is glass fiber reinforced plastic layer with a thickness of more than 2.5mm, which API Std 650 welded tanks for oil storage has strong corrosion resistance and electric corrosion resistance. Special process technology is used between the two layers to make the gap reach 0.1 mm, so as to eliminate the existence of potential safety hazard from the root.

Impact Tests for High Alloys
Impact tests are not required for oil steel storage material nickel alloy welds made with electrodes/filler metals covered by AWS Specification A5.11 or AWS Specification A5.14, provided the nominal nickel content is 50% or greater, and the weld is deposited by the shielded metal-arc welding (SMAW), gas metal-arc welding (GMAW), gas tungsten-arc welding (GTAW), or plasma-arc welding (PAW) processes. When A5.11/A5.14 specifies the nickel content as a “remainder,” the nickel content shall be determined by summing the maximum specified values of the other elements (use the average specified value for elements with specified ranges) and subtracting from 100%.

Generally speaking, the duration of the "exhalation" of the API Std 650 welded tanks for oil storage is longer than that of the "inhalation" of the API Std 650 welded tanks for oil storage every day. There are many factors affecting the "small breathing" loss, mainly including the following points: the change of temperature difference between day and night, sunshine time of the API Std 650 welded tanks for oil storage location, open area of the API Std 650 welded tanks for oil storage, atmospheric pressure, filling degree of API Std 650 welded tanks for oil storage, etc. When the API Std 650 welded tanks for oil storage is full of gas, the space volume is small, and the "small breathing" loss is less; if the space volume is large, the loss is also large.

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