API Std 650 SUG I tanks envelope seals

According to the standard of head of API Std 650 SUG I tanks, there should be no crack, delamination, inclusion and other defects on the groove surface, which is consistent with the steel plate standard. The API Std 650 SUG I tanks head polishing can adopt different technology according to different requirements, including rough polishing, medium polishing and fine polishing. Only the materials used for the third type of pressure vessels must be retested, and the materials used for the first and second class pressure vessels are not generally re inspected.Thickness as it Affects Preheat and Post-heat Requirements
Plate with thicknesses below 1/2 in. is reasonably notch tough. In most steels, when the API Std 650 SUG I tanks used plate thickness exceeds 3/4 in. – 1 in., notch toughness, particularly as welded, decreases sharply. The decrease in notch toughness can be minimized by the conventional post-heat treatment and, in many steels, by preheat treatment. The benefits of preheat treatment in steels 3/4 in. – 1 in. thick have been demonstrated; similar benefits could be expected in thicker steels, but sufficient experimental data are currently lacking.API 650 petroleum storage tanks use lightning protection, anti-static, and fire protection measures. The internal corrosion protection should be determined according to the API Std 650 SUG I tanks storage medium, and the outer wall corrosion protection should be determined according to the soil quality of the buried tank.The cultural construction must let the enterprise staff participate in the enterprise culture, in order to better carry on the effective dissemination enterprise idea, the sharing value system, such as the internal communication, the newspaper, the forum, the propaganda, the news announcement and so on. At the same time, the system can also be used to educate and train employees, send blessings to employees on their birthdays or during Chinese New Year holidays, so that employees can feel the practice of corporate culture, the warmth of the enterprise, and enhance the sense of belonging and recognition of the enterprise.The company will rely on its good reputation, excellent hot-rolled plates, steel pipes, steel structure products, and intimate API Std 650 SUG I tanks after-sales service to customers. I would like to express my heartfelt thanks to the old and new friends and customers who have always given care, support and help to the company! The company sincerely hopes to establish a long-term cooperative relationship with them, mutual benefit and common development. Welcome to come and visit our API Std 650 SUG I tanks steel mill.