API Std 650 welded tanks for oil storage manual welding
API 650 is the standard for welded tanks for oil storage. It specifies the design, manufacturing, welding, inspection and installation requirements of oil tanks. API 650 API Std 650 welded tanks for oil storage is widely used in storage tanks with internal pressure less than or equal to 2.5 PSI, used to store products such as crude oil, gasoline, chemicals, and produced water. BBN has extensive experience in API Std 650 welded tanks for oil storage API 650 tanks with diameters between 8'-300', suitable for refineries, terminals, pipeline facilities and other customers.
The thickness of the API Std 650 welded tanks for oil storage annular bottom plates shall be in accordance with Table Q-4 (for steel or aluminum, as applicable). The thicknesses shown are minimums. The ring of annual plates shall have a circular outside circumference, but it may have a regular polygonal shape inside the tank shell with the number of sides equal to the number of annular plates. These pieces shall be butt-welded in accordance with Q.7.1.1, Item b. The plates of the first shell course shall be attached to the annular bottom plates by a weld as required by API 620 oil tank 5.9.5 except when a full-penetration weld is used or required (see Q.7.1.1). Butt-welds in annular plates shall be not closer than 12 in. from any vertical weld.
No matter what type of storage tank needs to be built, the natural conditions of the geographical area where the tank is located should be fully considered in the design. Because natural conditions will affect the service life, storage safety and construction cost of storage tanks such as API Std 650 welded tanks for oil storage. Generally, the natural conditions that need to be considered before API Std 650 welded tanks for oil storage design and construction are: regional temperature, wind load, snow load, ground endurance, external environment corrosion, etc.
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