API Std 650 self-anchored flat-bottom tanks welding methods

The API Std 650 standard published by the American Petroleum Institute (API) is designed to provide the petroleum industry with welded steel tanks for use in the API Std 650 self-anchored flat-bottom tanks storage of petroleum products and other liquid products commonly handled and stored by the various branches of the petroleum industry.

API 620 Tank Design
The designer of these large tanks API Std 650 self-anchored flat-bottom tanks shall supply the data on superimposed loadings to be assumed for the foundation design or, if there are no foundations, for direct loading on the subgrade. A slab or mat may be provided to support the superstructure and shall be considered to distribute the load more evenly over a lower natural subgrade compared with merely stripping, leveling, and rolling the existing grade.
For simple spheroids or tanks of similar design, in which the distribution of the imposed weights shifts because the liquid level in combination with the vapor pressure may change the shape of the tank, the designer shall consider the possibility of such a change.

Our company attaches great importance to technical support and after-sales service, and has established a customer service center to provide unified technical support and service for API Std 650 self-anchored flat-bottom tanks various engineering projects. Customer service center has a strong technical force of technical service team, composed of a customer service center manager, several API Std 650 self-anchored flat-bottom tanks after-sales service personnel, responsible for unified acceptance and processing of local after-sales service needs.