API 650 welded tanks for oil storage bottom shell

API 650 storage tank is used for commonly used oil, gasoline, diesel, chemical and production water storage. API 650 welded tanks for oil storage Storage tanks built to these standards are spread across U.S. refineries, terminals, pipelines, and production facilities. The API 650 detailed standard specifies the design, processing, welding, inspection and installation procedures for storage tanks.

The most popular standards for API 650 welded tanks for oil storage are API Std 650, JIS B8501, BS2654, GB50341, etc. The formulas used in each standard are derived from the hoop stress calculation formula of membrane theory. Combined with the stress characteristics of API 650 welded tanks for oil storage, plus the allowable stress, weld coefficient and additional wall thickness, the wall thickness calculation formula is complete. The allowable stress and weld coefficient are determined according to the material performance characteristics and construction technology level of each country. According to different API 650 welded tanks for oil storage standards, the calculation results of tank wall thickness are sometimes quite different.

Soil Structure Interaction: Soil structure interaction per API 650, Section E.6.1.6 may be used for OLE design providing the damping ratio does not exceed 10 %.
Allowable Stresses
Design allowable stresses shall be per API 620 large welded steel storage tank, Section Q.3.3, including the 33 % increase permitted for earthquake loads.
Self-anchored Inner Tank
The anchorage ratio for a self-anchored inner tank, J, shall not exceed 1.0 for the OLE design combination to limit uplift and stresses in the annular plate and corner weld.
Foundation Stability
The overturning ratio defined in API 650, Section E.6.2.3, Equation (E.6.2.3-1) shall be equal to or greater than 3.0 for the defined OLE event.

In order to further transform the operation mechanism, establish the operation concept of "market-oriented, customer-centric", strive to improve our core competitiveness and promote the rapid development of business; further strengthen customer marketing management, subdivide customer groups, establish a top-down, crisscross, hierarchical marketing mechanism of "everyone is a marketer", and provide for the needs of different levels of customers Corresponding services.

The company adheres to the needs of customers, adheres to win-win integrity, and relies on scientific and technological innovation to continue to improve the level of logistics equipment technology and information technology, and enhance the logistics technology research and development and innovation capabilities. Based on market demand and innovation as the driving force for development, the company actively expands the field of logistics services, accelerates the extension of the logistics industry chain, and scientifically advances the diversification of the logistics industry.