30ft diameter API 650 self-anchored flat-bottom steel tanks

The thickness of the API 650 self-anchored flat-bottom steel tanks wall plate, t, required by 5.10.3 for the latitudinal unit forces, T2, acting at this level is 0.57 in. The nozzle neck is seamless steel pipe and conforms to ASTM A53, Grade A; the materials in the tank wall and reinforcing pad conform to ASTM A442 Grade 55. The main joints in the tank walls are fully radiographed, double-welded butt joints. The adequacy of the reinforcement and attachment welds shown in Figure F-7 shall be determined.
To determine the length of the nozzle neck within the limits of reinforcement, the smaller of the following calculated values shall be used:(2.5)(0.625) = 1.56 in.
(2.5)(0.375) + 0.75 = 1.69 in.

This API 650 tank standard is designed to provide industry with tanks of adequate safety and reasonable economy for use in the API 650 self-anchored flat-bottom steel tanks storage of petroleum, petroleum products. and other liquid products.

In December of 2015, our regular India customer sent us an inquiry for API 650 self-anchored flat-bottom steel tanks pipe. The inquiry requires no negative tolerance in both pipes’ outer diameter and pipe wall. After two weeks’ discussion, he put the order of 275 tons to us. The pipes are finished within just one month. Our customer come to our factory to inspect the quality and tolerance, all the products are well meet his demand. The pipes are arriving to Nhava Sheva port, customer is very happy with our products and service during the process.

API 650 self-anchored flat-bottom steel tanks, Oil tank is a large-scale storage equipment used to store oil materials. Usually, the service life of API 650 self-anchored flat-bottom steel tanks is related to the actual working conditions. The design service life of most oil tanks is 20 years, and some of them are 10-15 years. Generally, none of them is less than 10 years. However, the design service life of API 650 self-anchored flat-bottom steel tanks is on the one hand, which is an ideal state, but there are many objective factors in the actual process, it is impossible to achieve the designed service life. How to effectively increase the service life of API 650 self-anchored flat-bottom steel tanks?

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