LTI company

LTI history


SETHI group creates LTI in Mondercange, in the Grand Duchy of Luxembourg.
LTI stands for ?Luxembourg Thermique Industrielle?, i.e. ?Luxembourg Industrial Thermal? in English.

We design and implement refractory linings of furnaces and industrial boilers, whether it is a new construction or a maintenance. We bring a dedicated and specific know-how close to our customers. For all these reasons, we are recognized in Luxembourg, France, and Belgium for the quality of our realizations.

LTI can rely on the SETHI group and its subsidiaries. CTIO was created in 1959 in Western France and is specialized in refractory linings as well. N.CIMC was created in 1988 in Central France and is specialized in Industrial Boilers, a highly complementary activity.

We offer our services in the following areas:
? Study and design of refractory linings
? Realization of study plans, realization plans, bill of materials and construction site preparation files
? Material supply
? On-site interventions
? Refractory parts manufacturing (oven-proofed in our production floor)
? 24-hour industrial maintenance (buffer stock of materials to maximize flexibility)
? Multi-year maintenance contracts setting-up





QHSE policy :


We decided since the very beginning to preserve health and safety of our staff. That is why we chose to implement and maintain an OHS (Occupational Health and Safety) management system.
LTI is OHSAS 18001 certified since November 3rd, 2015.
SETHI group


SSETHI is a family holding company intervening for maintenance operations in various industries such as power generation, heating networks and industrial furnaces.

The group is organized by subsidiaries and business lines:

  • Study, design, and manufacturing of refractory linings (LTI & CTIO)
  • Maintenance of industrial boilers from 10 to 50 MW and pressure equipment subject to the European directive 97/23/EC (N.CIMC)


SETHI operates in France, Belgium, and Luxembourg.