Manufacturing

Larger diameters or higher unit weights are feasible and are assembled in workshops located on water ways.

Fabrication steps

• mandrel (cylindrical core) pre-fabricated with tube sheets on both sides, rotating on a winding bench

• winding of tubes, layer by layer, using spacer bars (winding direction is changed for each tube layer)

• wrapping into a shroud (avoiding any shell side by-pass flow)

• tube to tube-sheet welding

• assembly of the tube sheets with the pre-fabricated bonnets

• insertion of the tube bundle into the pre-fabricated shell

• completion of the shell with dished ends, nozzles, etc.

• final testing & third party approval