U-tube
heat exchangers

U-Rohr-Wärmeübertrager
Type GD   Tube- or shell-side steam heated
Type GW   Water-cooled/heated
Type OVG   Oil pre-heaters, steam heated
Type ESG   Insertion pre-heaters for removing viscous tank content
Type ESB   Insertion tube assembly for temperature control of tank content
Type BKU   Kettle-type with enlarged shell volume for steam generation
- also as ECO + for maximum energy and resource efficiency