ISO 630 plates API 650 unanchored flat-bottom tank

Ultrasonic Examination of Butt-welds in Plates
Butt-welds in all tank wall courses subjected to a maximum actual operating membrane tensile stress, perpendicular to the welded joint, greater than 0.1 times the specified minimum tensile strength of the API 650 unanchored flat-bottom tank plate material shall be completely examined.
Butt-welds in API 620 oil tank wall courses subjected to maximum actual operating membrane tensile stress, perpendicular to the welded joint, less than or equal to 0.1 times the specified minimum tensile strength of plate material shall be spot examined in accordance with Figure Q-2.The standard API 650 covers the design and calculation of different parts of the API 650 unanchored flat-bottom tank fuel tank. This specification is based on the knowledge and experience of buyers, manufacturers and users of API 650 welded storage tanks of different sizes and capacities. It is worth noting that the code requirements are minimal; stricter standards can be adopted for specific applications.In December of 2015, our regular India customer sent us an inquiry for API 650 unanchored flat-bottom tank pipe The inquiry requires no negative tolerance in both pipes’ outer diameter and pipe wall After two weeks’ discussion, he put the order of 275 tons to us The pipes are finished within just one month Our customer come to our factory to inspect the quality and tolerance, all the products are well meet his demand The pipes are arriving to Nhava Sheva port, customer is very happy with our products and service during the process,API 650 unanchored flat-bottom tank., floating roof tank is composed of vertical cylindrical tank wall and floating roof, which is floating on the surface of liquid storage. The volume of floating roof storage tank is generally large, and its bottom plate is arched edge plate. The difference between floating roof tank and other types of storage tank is that there is a floating top cover floating on the surface of liquid storage, and the top cover floats up and down with the rise and fall of liquid storage.From the order to the delivery, there are three quality inspections to ensure that the qualified rate of finished products is more than 100%. We promise that every order will be tracked in a timely manner to ensure that customers can receive goods safely and constantly listen to their opinions and suggestions, reflect on our own problems, and let customers feel at ease. We have a large warehouse in Shanghai and Tianjin, which can provide customers with sufficient sources of supply.