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API 620 welded steel flat-bottom tanks dished reinforcing collar

API 620 welded steel flat-bottom tanks dished reinforcing collar

API 620 welded steel flat-bottom tanks dished reinforcing collar

API 620 welded steel flat-bottom tanks, SA516 Gr70 is hot rolled steel plate, while SA516 Gr70+N is normalized steel plate. Compared with SA516 Gr70, SA516 Gr70+N has one more normalizing heat treatment process. Normalizing is to make the grain refinement and carbide distribution uniform, remove the internal stress of the material, and reduce the hardness of the material. The toughness of the material will increase, and the low temperature performance will also be improved. The overall performance improves, and the price also increases.

The thickness of the API 620 welded steel flat-bottom tanks wall plate, t, required by 5.10.3 for the latitudinal unit forces, T2, acting at this level is 0.57 in. The nozzle neck is seamless steel pipe and conforms to ASTM A53, Grade A; the materials in the tank wall and reinforcing pad conform to ASTM A442 Grade 55. The main joints in the tank walls are fully radiographed, double-welded butt joints. The adequacy of the reinforcement and attachment welds shown in Figure F-7 shall be determined.
To determine the length of the nozzle neck within the limits of reinforcement, the smaller of the following calculated values shall be used:(2.5)(0.625) = 1.56 in.
(2.5)(0.375) + 0.75 = 1.69 in.

API 650 petroleum storage tank pipeline stress and product pressure, tank pressure, uniform or non-uniform temperature difference between the tank wall and the tank bottom, which cause the radial displacement and longitudinal rotation of the API 620 welded steel flat-bottom tanks tank wall at the opening to affect the oil tank wall The impact is obvious. Therefore, the design must ensure that the load applied by the external pipeline on the opening of the tank wall is within the safety limit. If the stress of the API 620 welded steel flat-bottom tanks connecting piping is not handled properly, the wall of the API 650 petroleum storage tank may deform or even rupture, causing a major accident.

We have our own factory, including the production and manufacturing of steel pipes, with a special API 620 welded steel flat-bottom tanks steel pipe manufacturer and storage warehouse. Welcome to visit our factory, we will provide customers with high quality products that meet the requirements. And has the perfect API 620 welded steel flat-bottom tanks after-sale service guarantee system, lets the customer save the worry and the labor.

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