A573 Gr 450 plates API 650 ground supported tanks

This standard only applies to API 650 storage tanks API 650 ground supported tanks with uniform bottom support and non-refrigerated service storage tanks with a maximum design temperature of not more than 93 degrees Celsius (200 degrees Fahrenheit).

Preheat Treatment
Many laboratory tests have shown preheat treatment of carbon steel to 300°F-400°F to be the equivalent of the post-heat treatment at no less than 1100°F insofar as the physical properties of the weldment are concerned.40,41 Some tests have indicated a slight advantage of the post-heat treatment. Most of the tests have been made on plates 3/4 in. - 1 in. thick; results must be viewed with caution if preheating is applied appreciably beyond this thickness range. However, for all practical purposes, improvement resulting from preheating is sufficiently well established so that preheat should be considered for field fabrication of API 620 crude oil tank plates over 3/4-in. thick whenever toughness of the tank API 650 ground supported tanks is highly desired and the thermal post-heat treatment is impractical.

How to effectively increase the service life of API 650 ground supported tanks oil tanks? It is necessary to check and inspect the oil tank regularly in the process of use, and do a good job in the maintenance and cleaning of the oil tank. The oil tank should be inspected every 6 years. With the increase of service life, the inspection interval should be shortened. Daily maintenance and cleaning of the API 650 ground supported tanks can prolong the service life of the oil tank. The maintenance of the API 650 ground supported tanks mainly includes the anti-corrosion inspection of the oil tank, the maintenance of the accessories, and the cleaning of the sediment in the tank.

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Our company will accept the product quality objection registration record, pass it to the API 650 ground supported tanks production unit and relevant departments, and timely coordinate the supervision of product API 650 ground supported tanks quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.