API standard 650 carbon and low-alloy steel tanks seismic use group iii

Upon completion of construction, provide Purchaser with copies of Field Erected API standard 650 carbon and low-alloy steel tanks storage tank Datasheets in accordance with Appendix L of API 650, which reflects the as-built conditions, certifying that the tank conforms with the requirements of this specification.

Our quality and service commitment: API standard 650 carbon and low-alloy steel 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.

Design of a Double-wall Tank
The outer bottom, shell, and roof of a double-wall tank shall enclose an insulating space around the bottom, shell, and roof or insulation deck of the inner tank that contains the stored liquid. The annular space shall be maintained at a low positive pressure, which necessitates that the enclosure be vapor-tight. The Purchaser shall specify the design metal temperature and pressure of the inner tank and may specify the design temperature and pressure of the outer tank API standard 650 carbon and low-alloy steel tanks. The Purchaser shall state the specific gravity of the content to be stored, roof live loads, wind load, earthquake load where applicable, and corrosion allowance, if any.

Generally speaking, the duration of the "exhalation" of the API standard 650 carbon and low-alloy steel tanks is longer than that of the "inhalation" of the API standard 650 carbon and low-alloy steel tanks every day. There are many factors affecting the "small breathing" loss, mainly including the following points: the change of temperature difference between day and night, sunshine time of the API standard 650 carbon and low-alloy steel tanks location, open area of the API standard 650 carbon and low-alloy steel tanks, atmospheric pressure, filling degree of API standard 650 carbon and low-alloy steel tanks, etc. When the API standard 650 carbon and low-alloy steel tanks is full of gas, the space volume is small, and the "small breathing" loss is less; if the space volume is large, the loss is also large.