Can it be soldered on the tank of the pressure vessel?
Yes... As long as it is not welded on the seam Of course, if the jar is not being welded in the stress test
If you have a device in the system, to weld a few pads on the outside of the device, and support the piece, first stop. According to the regulation, the weld shall be the E class weld, the welding joint between the compression element and the non-compression element. It is also necessary to evaluate and operate the certified welders. In particular, the welding of the lifting ear and cylinder shall be tested for inspection. So because you ask the question is simple, specific problem specific analysis.
If pressure vessels are working or under internal pressure, they cannot be soldered. If it must be soldered, please release the internal pressure and replace flammable and poisonous gas. If welding affects the strength or material of the container, it is necessary to inform the local quality and technical supervision bureau
