
The company
TDEM3, industrial mezzanine manufacturer since 1989
A company from northern France that designs, manufactures and installs custom steel platforms, with its own engineering office and its own workshops.
Our strengths
EN 1090
European certification
Steel structures compliant with CE marking
1989
Over 35 years of experience
Recognised expertise in industrial mezzanines and platforms
100 %
In-house engineering office
Drawings and structural calculations produced in-house
France
French manufacturing
Design, manufacturing and installation by our own teams
Our story
Storage platforms, our speciality since 1989
Founded in 1989 by Thierry Deblaton, TDEM initially specialised in installing industrial equipment, mainly platforms.
Building on this experience, and seeing that the platforms on the market lacked technical performance and capacity, the company chose to innovate: producing industrial platforms and mezzanines made entirely from hot-rolled steel sections. This choice allowed it to offer new products and higher-performing technical solutions.
Innovation, responsiveness and efficiency: these values have made TDEM3 a recognised player in industrial platforms in France. Extensive advisory experience, many references and an in-house engineering office enable us to offer a technical solution suited to every need.

Milestones
From TDEM to TDEM3
- 1989
TDEM is founded
Thierry Deblaton founds the company, specialising in the installation of industrial equipment.
- Innovation
The choice of hot-rolled sections
Stronger platforms, with long spans and fewer columns.
- EN 1090
CE certification
Qualified welders, a welding coordinator and regular audits by independent bodies.
- Today
TDEM3
Projects throughout mainland France, the French overseas territories and Europe.
Experience
Over 35 years of expertise in steel structures
Since 1989, TDEM3 has been designing, manufacturing and installing industrial mezzanines and platforms for warehouses, workshops and buildings open to the public.
over 35 years
of experience in steel structures
over 500
completed projects
up to 18 m
span between columns
up to 4,000 kg/m²
imposed load
The heart of TDEM3
Every mezzanine is calculated, not estimated
Since 1989, our engineering office has supported your projects from feasibility study to modelling. Loads, spans and supports are calculated for your building, and every drawing is checked before manufacturing.
We use industry-standard software for the calculation and drafting of steel structures, which ensures the accuracy of our projects from concept to workshop.
- Advance DesignStructural calculation
- Scia EngineerAnalysis and sizing
- Tekla Structures3D modelling of the steelwork
- AutoCADDrawings and layout

Our services
Your project managed from start to finish
From the feasibility study to manufacturing, including modelling, sizing and construction drawings: we manage every stage. A specific structural calculation report is supplied for each structure; it is essential for your project to be approved by the inspection bodies.
- 01Defining the requirements of your structure
- 02Site visit for a dimensional survey
- 03Feasibility study
- 04Design studies with structural calculations
- 05Specification of stairs, guardrails and metalwork in line with standards
- 06Production of all manufacturing drawings
- 07Creation of CNC files for manufacturing
- 08Manufacturing follow-up
- 09Installation by our own teams
- 10Final handover
CE EN 1090 certified
TDEM3 complies with the European standard EN 1090, which governs the execution of steel structures. This certification required training our staff: welder qualification, a welding coordinator and training for the head of the engineering office. Periodic audits are carried out by independent bodies to check that the standard is correctly applied.
The team
Specialists, from calculation to assembly
At TDEM3, the same team follows your project from start to finish: the engineering office that calculates the structure, the workshop that manufactures it and the crews who install it on your site. A single point of contact, from the first survey to final handover.
- An integrated team: engineering office, manufacturing workshop and installation crews
- Workshop equipped with CNC machines: machining line, plasma cutting, punching machine

Your guarantees
What you can count on
- EN 1090 certifiedCE marking of our structures, with regular audits by an independent body.
- InsurancePublic liability and ten-year building insurance for all our structures
- ManufacturingManufactured in our workshops in Comines (northern France)
- Fast responseReply within 48 business hours
- Area coveredNorthern France, all of mainland France, French overseas territories and Europe
They trust us
Manufacturers, logistics providers and infrastructure operators rely on us to design and install their mezzanines and platforms.
Let's work together on your project
Since 1989, we have designed every mezzanine for a specific building and use. Let's talk about yours.







