aluminum sheet 5254 API standard 650 welded steel oil storage tanks

Our company will set up a full-time service engineer for the project, who is responsible for the interface and coordination of technical support and after-sales service of the API standard 650 welded steel oil storage tanks project. In response process of customer service center, in case of technical support and after-sales service demand, the user shall contact the full-time engineer of API standard 650 welded steel oil storage tanks customer service center, and the technical personnel will give corresponding answers and on-site treatment according to the needs of users.The API standard 650 welded steel oil storage tanks stiffener ring and backing strip (if used) are primary components, and they shall comply with the requirements of API 620 storage steel tank Q.2.1. The stiffener rings may be fabricated from plate using an intermittent weld on alternating sides between the web and the flange.
Except for aluminum or stainless steel tanks, all fillet welds shall consist of a minimum of two passes. The ends of the fillet welds shall be 2 in. from the rat hole (see Figure Q-1), and these welds shall be deposited by starting 2 in. from the rat hole and welding away from the rat hole. An acceptable alternative to the detail that includes stopping fillet welds 2 in. short of the rat hole would be to weld continuously through the rat hole from one side of the stiffener to the opposite side. All craters in fillet welds shall be repaired by back welding.Before pressure testing, thoroughly flush the API 650 tank floating roof primary drain hose system. Supply API standard 650 welded steel oil storage tanks blind flanges, gaskets, and bolting (for other types of blanking covers as may be required) necessary for testing.The company operates on the principles of fairness, objectivity, science, pragmatism and integrity. The management treats people with courtesy, takes sincerity as the standard management, dares to open up, unites and advances, carries on the past and makes unremitting efforts, seizes the good trend of economic development, strengthens exchanges with peers, makes friends with all walks of life, keeps pace with the times and creates greater brilliance of the enterprise, and makes its own contribution to the prosperity and development of the steel industry.Prefabrication requirements of API standard 650 welded steel oil storage tanks, large vertical storage tank wall panels:
1. The prefabrication of wall panel shall be processed in strict accordance with the requirements of the drawings, and inspection records shall be made.
2. After the wall panel is rolled, it should be placed on the platform for inspection with a template. In the vertical direction, use a straight-line template to check, the gap should not be greater than 2 mm, and in the horizontal direction, use an arc-shaped template to check, and the interval should not be greater than 4 mm.
3. When wall panels are rounded, attention should be paid to prevent irreversible plastic deformation caused by external forces. After rolling, it should be placed on the platform for inspection, and then placed on the prepared mold.