API Std 650 self-anchored flat-bottom tanks design factors

Welded steel API Std 650 self-anchored flat-bottom tanks storage tanks that are designed, manufactured and installed on the ground are classified according to the API standard system. The three API standards API Std 650 self-anchored flat-bottom tanks all adopt on-site production and installation of storage tanks.

Allowable Design Stresses
The maximum allowable design stresses for the API Std 650 self-anchored flat-bottom tanks materials outlined in Q.2.1 shall be in accordance with Table Q-3.The values for the allowable design tensile stress given in Table Q-3 for materials other than bolting steel are the lesser of (a) 331/3% of the specified minimum ultimate tensile strength for the material or (b) 662/3% of the specified minimum yield strength, but they are 75% of the specified minimum yield strength for the stainless steel, nickel alloy, and aluminum materials. Allowable test stresses are based on the limitation of API 620 oil tank storage standard Q.8.1.3.

To scientifically evaluate the remaining service life of the API Std 650 self-anchored flat-bottom tanks, it is necessary to know the thickness change and development trend of the storage tank sheet after long-term use, combined with the metal characteristics of the storage tank, the influence of various external conditions and the continuous change of the oil pressure in the API Std 650 self-anchored flat-bottom tanks, etc. factors to judge. Because the metal characteristics, corrosion defects, load and other numerical parameters of the API Std 650 self-anchored flat-bottom tanks are randomly changed, the value of the remaining service life of the storage tank will also be dynamic.

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Our quality and service commitment: API Std 650 self-anchored flat-bottom tanks product quality problems, life-long replacement.In the process of using, any time if you find we supplied steel materials not conform to the requirements of technical standards, we can replace it for you free of charge. However, it should be noted that non product quality problems caused by improper use are not covered by the warranty. Please pay attention to the service time commitment as well as the product quality assurance commitment. Because only the products of big brands and reliable enterprises with complete after-sales service system can truly realize the long-term product quality assurance and the whole process of service.