Process Piping

Process Piping : We manufacture complex industrial assemblies in stainless steel, in single or double jacket piping by manual TIG or orbital TIG welding.

Fluid’Inox is involved in the entire process of manufacturing process piping : from design to prefabrication in the workshop, to on-site installation and maintenance contract.
Our process piping is manufactured in accordance with current standards and the PED (Pressure Equipment Directive).
Our qualified and autonomous staff, our internal organization and our business procedures, allow us to support you at the national level, but also at the international level.
Our recognized know-how allows us to carry out various assembly workprocess pipe fitting with different welding processes:

  • Orbital welds with closed head, from 1/8”
  • Manual welding of any diameter, any thickness, with and without filler metal

The study and design of your network:

  • Pre-project study, on-site surveys
  • Detailed study, realization of PID (installation diagram)
  • Study and 3D modeling of networks
  • Network sizing, pressure and flexibility calculations (according to CODETI and EN 13480)
  • Calculations of flow rates, velocities and pressure drops
  • Definition and calculation of support elements
  • Realization of isometric specifications, welding specifications and DESP file

Prefabrication in the workshop:

  • Prefabrication of stainless steel process piping
  • Process skids: storage, mixing, dosing and transfer equipment; temperature regulation and instrumentation; CIP skids
  • Prefabrication of bridging panels, gas cabinet, VMB
  • Surface treatment before on-site assembly: pickling, passivation, halarization, teflon coating

On-site work:

  • Pipeline manufacturing
  • Installation of rebars
  • Instrumentation assembly
  • Insulation and electrical tracing
  • Internal processing of tubes and accessories
  • Carrying out tests, analyses: pressure, helium leakage by sniffing and/or spraying, hydraulics, H2O analysis, particulate
  • Controls: radiography, PT, endoscopy
  • Start-up
  • Executed work file, nuclear file

Qualification of process piping:

  • Study
  • Installation
  • Factory Acceptance Test
  • Site Acceptance Test

Maintenance services:

  • Final commissioning
  • Maintenance
  • Periodic visits
  • Repair and requalification of pressure equipment
  • Audit and consulting of industrial installations (energy and fluid processes)
  • Applicable regulations (new or in service equipment)

Fluid'Inox is able to meet your specifications as accurately as possible for your process piping problems.

Our teams support you in your requests for complex industrial networks, from the design office to turnkey delivery and installation.
Fluid’Inox is competent to work on all types of process piping and industrial fluid processes: gaseous, liquid and cryogenic fluid networks.


Please let us know if you would like a quote or an appointment. Our chargés d’affaires will answer you as soon as possible.

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    16 Avnue d’Ouessant
    Bâtiment C7
    91140 Villebon-sur-Yvette

    01 89 40 28 69