ISO 630 Gr E355D plates API Std 650 welded tanks for oil storage

Some defects may be found after the regular safety inspection for the API Std 650 welded tanks for oil storage. The common API Std 650 welded tanks for oil storage defects are: Tank cracks, tank welding defects. The cracks on the base metal, surface and near surface of the tank wall shall be eliminated by grinding with circular arc, and then magnetic particle inspection or re inspection shall be carried out. Cracks in heat affected zone: generally, grinding method is used to eliminate cracks, and magnetic particle or dye flaw detection is used to confirm that there is no crack, and then repair welding or grinding smooth transition.In this project, an elemental area of tank wall used is constructed of ASTM A442 Grade 55 steel plate subjected to a meridional unit force, T1, of 4000 lbf/in.2 tension and a latitudinal unit force, T2, of 5060 lbf/in.2 compression. The meridional radius of curvature, R1, is 75 in., and the length of the normal from the surface to the axis of revolution, R2, is 300 in. The joints in the wall are of double-welded butt-joint construction with a tensile efficiency of 85%. A corrosion allowance of 1/16 in. is required.
The problem in this example is to graphically find the minimum thickness of tank wall required for the given conditions (see 5.10.3.3).
Solution: As determined from Table 5-1, the maximum allowable tensile stress value, Sts, for ASTM A442 Grade 55 steel plate in simple tension is 16,500 lbf/in.2. Since the compressive stress is latitudinal, the governing value of R in this situation is R1, or 75 in.This standard applies only to API 650 tank API Std 650 welded tanks for oil storage whose entire bottom is uniformly supported and to API 650 tank in non-refrigerated service that have a maximum design temperature of 93°C (200 °F) or less.Integrity based:To customers, we should value our credit and keep our good image forever.To colleagues: respect each other, trust each other, make efforts togetherService first:Customer satisfaction is always the first pursuit.The company provides customers with not only advanced technology and high-quality API Std 650 welded tanks for oil storage products, but also the spirit of credit and service.Innovation:We are good at learning, drawing on the strengths of all, innovating and developing, introducing, researching and developing the latest technology, and making our products have a stronger vitality.Our company has its own steel plate manufacturing plant, processing plant and steel pipe plant. We can machine the steel according to the API Std 650 welded tanks for oil storage customer's requirements and meet the customer's requirements. If you want to ask any questions about steel products, please contact us directly. Our customer service staff will give you a detailed answer. If you want to purchase API Std 650 welded tanks for oil storage steel products, please tell me your specific needs, we have professional business personnel to communicate with you.