We have our own engineering department. Before a drawing of a vessel is made, a strength calculation can be performed. We have a number of specific software programs for this purpose.
Then the drawing is prepared. We use your and our knowledge, which is converted into an end product. The latest version of AutoCad or Inventor is used for this. The major advantage of designing in Inventor is that this program generates a 3D drawing that can be used to locate bottlenecks at an early stage.
This applies not only to production, but also to the big picture, as the drawings are interchangeable and the client can fit the tank into the overall design.