Mechanical loads on API 650 welded tanks for oil storage

Thickness as it Affects Preheat and Post-heat Requirements
Plate with thicknesses below 1/2 in. is reasonably notch tough. In most steels, when the API 650 welded tanks for oil storage used plate thickness exceeds 3/4 in. – 1 in., notch toughness, particularly as welded, decreases sharply. The decrease in notch toughness can be minimized by the conventional post-heat treatment and, in many steels, by preheat treatment. The benefits of preheat treatment in steels 3/4 in. – 1 in. thick have been demonstrated; similar benefits could be expected in thicker steels, but sufficient experimental data are currently lacking.

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API 650 storage tank, double-layer oil tank environmental protection advantages: ordinary single-layer steel API 650 welded tanks for oil storage oil tank is corroded by underground water and gas and electrolytic corrosion because it is buried underground all year round. The API 650 tank has a double-layer structure with a gap of 0.1 mm. The API 650 welded tanks for oil storage outer layer of FRP ensures that the leakage will not directly leak into the soil and water source.

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