A662 Gr B plates API standard 650 welded steel oil storage tanks

Volatilization is the characteristic of oil. Under normal temperature and pressure, as long as the oil is in contact with air, the surface will volatilize. Through scientific analysis and summary, the causes of oil volatilization loss in API standard 650 welded steel oil storage tanks are: natural ventilation loss, static storage loss, dynamic liquid level loss. In the use of API standard 650 welded steel oil storage tanks, static storage loss and dynamic liquid level loss are common losses.The pressed-steel, round manhole with a 20-in. inside diameter shown in Figure F-8 is located in API 620 crude oil tank solid plate in spherical portion of a torispherical roof on a cylindrical storage tank 72 ft in diameter. The internal pressure, Pg, on the underside of the roof is 15 lbf/in.2 gauge. The thickness, t, of the roof plate required by 5.10.3 for the spherical portion of the roof is 1/2 in., which is exactly the thickness provided. No corrosion allowance is required. The materials in the oil tank roof plates and manhole frame conform to ASTM A283 Grade C steel; the main joints in the roof are double-welded butt joints, spot radiographed in accordance with 7.16 and 7.17.This standard establishes minimum requirements for API 650 tank material, API standard 650 welded steel oil storage tanks design, fabrication, erection, and inspection for ertical. aboveground，closed- and open-top."Hard and solid, honest commitment, practical effect". To strive for a solid enterprise foundation with hard work style; to promise first-class enterprise service with honest faith; to create efficient enterprise performance with practical spirit.The consistent tenet of honest management! Know the needs of customers, for the needs of customers, urgent customers think! Our quality is better for the API standard 650 welded steel oil storage tanks same products, our price is lower for the same quality, and our service is better for the same price. welcome to purchase steel materials from our company. we have the professional team and good after-sale system to customers. our company API standard 650 welded steel oil storage tanks is your best choose.