API Std 650 SUG II tanks stiffening rings as walkways

Allowable Design Stresses
The maximum allowable design stresses for the API Std 650 SUG II 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.

Our quality and service commitment: API Std 650 SUG II 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.

BBN can provide design, manufacture and installation of API 650 large oil and crude oil storage tanks. We can build a API Std 650 SUG II tanks 7,000,000 gallon API 650 petroleum storage tank. In addition, BBN has the means to construct multiple storage tanks at the same time. We are very experienced in providing API 650 petroleum storage tanks.

The manufacturing requirements of bottom plate of vertical metal tank, API Std 650 SUG II tanks are as follows: 1. In order to compensate welding shrinkage, the layout diameter of tank bottom is 5-2mm than the design diameter; 2. The butt joint of edge plate of tank bottom shall be machined automatically or semi-automatically; 3. The distance between any two adjacent welding joints on the tank bottom plate and the distance between the butt joint of edge plate and the longitudinal weld of bottom ring wall plate shall not be greater than 200 mm.