ISO 630 plates API Std 650 ground-supported liquid storage tanks
Heat-affected zone impact specimens shall be taken across the weld and as near the surface of the material as is practicable. The API Std 650 ground-supported liquid storage tanks material specimens shall be of sufficient length to locate the notch in the heat-affected zone after etching. The notch shall be cut approximately normal to the material surface to include as much heat-affected zone material as possible in the resulting fracture. Impact test specimens shall be cooled to the temperature stated in Q.22.
The API 650 is the American standard for welded flat-bottomed vertical API Std 650 ground-supported liquid storage tanks storage tanks. This standard dictates tank design, manufacture, welding, inspection and installation requirements.
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}The most popular standards for API Std 650 ground-supported liquid storage tanks are API Std 650, JIS B8501, BS2654, GB50341, etc. The formulas used in each standard are derived from the hoop stress calculation formula of membrane theory. Combined with the stress characteristics of API Std 650 ground-supported liquid storage tanks, plus the allowable stress, weld coefficient and additional wall thickness, the wall thickness calculation formula is complete. The allowable stress and weld coefficient are determined according to the material performance characteristics and construction technology level of each country. According to different API Std 650 ground-supported liquid storage tanks standards, the calculation results of tank wall thickness are sometimes quite different.
Due to other non-steel quality reasons caused by the customer dissatisfaction, to timely explain to the customer, and help them solve the problem, for the customer really because of their own reasons, to give patient reply.The process of objection handling is the process of our technical service.
