3004 aluminum shapes API standard 650 duplex stainless steel tanks

Oil tank is often used to store crude oil, diesel oil, gasoline and other oil. The main structure of API standard 650 duplex stainless steel tanks is composed of tank top, tank wall, tank bottom and accessories. The API standard 650 duplex stainless steel tanks should be inspected after the completion of construction, and the detection methods of different structure positions are different. Tank wall inspection: for the newly built oil tank, water filling test shall be conducted to check whether the tank wall is tight, and the appearance inspection shall be conducted for the tank wall plate and weld. Tank wall thickness detection: the oil tank wall thickness is mainly detected by ultrasonic wave, with high efficiency.

The refrigerated tank primary components shall also include those parts of a single-wall or an inner tank that are not in contact with the refrigerated liquid but are subject to the refrigerated temperature. Such API standard 650 duplex stainless steel tanks components include roof plates, roof manways and nozzles with their reinforcements, roof-supporting structural members, and shell stiffeners when the combined tensile and primary bending stresses in these components under design conditions are greater than 6000 lbf/in.2.

This standard applies only to API 650 tank API standard 650 duplex stainless steel tanks whose entire bottom is uniformly supported and to API 650 tank in non-refrigerated service that have a maximum design temperature of 93°C (200 °F) or less.