Internal structural members of API Std 650 unanchored liquid-storage tanks

Compared with the fixed roof API 650 oil storage tank without API Std 650 unanchored liquid-storage tanks floating roof, there is no evaporation space. In principle, this eliminates the so-called "large breathing loss". Evaporation not only causes the loss of product quantity, but also affects the quality of API Std 650 unanchored liquid-storage tanks product and pollutes the environment.

Oil tank is often used to store crude oil, diesel oil, gasoline and other oil. The main structure of API Std 650 unanchored liquid-storage tanks is composed of tank top, tank wall, tank bottom and accessories. The API Std 650 unanchored liquid-storage tanks should be inspected after the completion of construction, and the detection methods of different structure positions are different. Tank wall inspection: for the newly built oil tank, water filling test shall be conducted to check whether the tank wall is tight, and the appearance inspection shall be conducted for the tank wall plate and weld. Tank wall thickness detection: the oil tank wall thickness is mainly detected by ultrasonic wave, with high efficiency.

API 620 Steel Oil Tank Bottom and Shell Support
The tank API Std 650 unanchored liquid-storage tanks under-bottom insulation shall be designed to resist the combined pressures from the product load, the overturning seismic load and the vertical seismic load. These seismic pressures may be combined by SRSS.
The bearing ring under the shell shall be designed to resist the calculated OLE peak compressive force in the tank shell due to overturning (see API 650 oil tank, Section E.6.2.2), including dead and live loads. A 33 % increase in allowable bearing stress is permitted.

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Due to the surge in business volume in recent years. In addition to coordinating our own truck fleet, our logistics department has continuously developed high-quality logistics companies and signed long-term cooperation agreements. While enjoying the professional and fast service of logistics companies, we have significantly reduced transportation costs. That not only ensure our customers receive the goods at the same time, but also help them reduce shipping costs.