A537 Cl 1 plates API standard 650 flat-bottom steel tanks

The main reason of "small breathing" loss of API standard 650 flat-bottom steel tanks is the change of atmospheric temperature. When the temperature rises with the increase of solar radiation from dawn, the temperature of oil in the API standard 650 flat-bottom steel tanks also changes, resulting in the acceleration of evaporation speed and the increase of evaporation pressure. When the pressure exceeds the positive pressure rating of the breathing valve, the oil-gas mixture in the API standard 650 flat-bottom steel tanks is discharged into the atmosphere through the breathing valve, which is the "exhalation" process of the oil tank.The insert plate weld shall not cross any shell seams and shall be at least the greater of 10 times the shell thickness or 12 in. from any other weld in the API standard 650 flat-bottom steel tanks shell including shell seams, shell-to-bottom weld or attachment welds. The butt weld around the periphery of the plate shall be examined over 100% of its length by both liquid penetrant method and radiographic method. The liquid penetrant examination is required on the root pass, on the back-gouged surface, and on the inside and outside finished weld surfaces. Additionally, the weld shall be vacuum box leak tested.The API 650 specification provides guidelines for the API standard 650 flat-bottom steel tanks design, manufacturing, materials, installation and inspection of welded vertical and cylindrical tanks. Such containers must be on the ground and have a closed or open top.Our company was founded in 2009, and has been committed to steel business since its establishment. Over the years, the company's performance shows a good development trend, with a wide range of customers in the government, domestic and foreign markets. The company has always been in line with the tenet of "based on trust and win with quality", focusing on the market demand, with a long-term vision, with years of hard work and trustworthy operation, and the support of the majority of API standard 650 flat-bottom steel tanks businesses and customers, has won the unanimous praise and trust of the industry and customers!Welcome customers to visit our company, we specialize in steel products, adhere to the API standard 650 flat-bottom steel tanks quality first standard, and do not forget to provide customers with the best quality products and services. Our product quality office is the best, and our API standard 650 flat-bottom steel tanks price is also very advantageous. Welcome to purchase steel products from our company.