API Std 650 unanchored flat-bottom tank roof accessories

Atmospheric API Std 650 unanchored flat-bottom tank refer to storage tanks whose gas or vapor pressure is greater than -0.02MPa but less than 0.1MPa. Metal atmospheric storage tanks made of steel welded on the ground are often used to store petroleum, chemical and other similar liquids. Atmospheric API Std 650 unanchored flat-bottom tank usually have a connecting pipe directly connected to the atmosphere, so that the operating pressure in the storage tank does not exceed the design pressure at all times.

In cylindrical tank walls, the longitudinal weld joints in adjacent shell courses, including compression ring welds, shall be offset from each other a minimum distance of 12 in. The butt-weld around the periphery of a thickened insert plate, or the fillet weld around the periphery of a reinforcing plate, shall be at least the greater of 10 times the shell thickness or 12 in. from any butt-welded seam or the bottom-to-shell or roof-to-shell joint. As an alternative, the insert plate (or the API Std 650 unanchored flat-bottom tank reinforcing plate in an assembly that does not require stress relief) may extend to and intersect a flat-bottom-to-shell corner joint at approximately 90 degrees.

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We also specialize in internal and external floating roofs, cathodic protection, primary and secondary containment, and storage tank foundations. Our staff are skilled in producing API 650 petroleum storage tanks. If you need to replace or repair API Std 650 unanchored flat-bottom tank API 650 petroleum storage tanks, please contact us in time. Every API 650 petroleum storage tank we make emphasizes quality and safety.