Temasme has several designs for high pressure shell and tube heat exchangers, utilized in the hydrotreating process. The most widely required heat exchangers are TEMA type, DEU modified (bolted-in construction), however Temasme is also highly qualified to supply other types of heat exchangers with special closures for high pressure applications (packed metallic / fiber, trapezoidal metal / fiber and delta metal closures).

The most frequently used materials are various grades of low-alloy steels, high nickel alloys, Incoloy 825, Inconel 625. Materials can be offered in solid, cladded or overlaid construction, carried out in single-layer or double-layer by ESW or SAW processes. Tube to tubesheet joint is performed with orbital-automatic welding with or without filler metal in one or two layers. NDE techniques are TOFD, CB-Scan, Phased Array in accordance with ASME C.C. 2235 instead of RT for heavy wall components.