Bolted Steel Tanks from China: What the Landed Cost Does Not Show There is a good reason bolted tanks are one of the more sensible things to import: they are designed to travel. A welded tank has to be built where it stands, while a bolted tank ships as panels that fit standard containers and assemble quickly on a prepared foundation. That structural advantage is real, and it is why importing one usually works. It is also why comparisons go wrong. Two quotations for