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Induction Heating

Post weld heat treatment, preheating and stress relieving with multi-zone controlled, fully recorded heating cycles.

Overview

Controlled heat. Recorded proof.

We have performed heat treatment since 1973. We perform post weld heat treatment (PWHT), preheating and stress relieving on pipelines, power plant piping, manifolds and pressure vessels.

Our induction and resistance heating units control up to 12 zones each, with thermocouples on every zone and continuous recording, so every cycle comes with a full temperature chart for the client file.

5Heat treatment units, 82 kVA
12Controlled zones per unit
750°CTypical PWHT range
100%Recorded cycles
Methods

What we offer.

All methods are carried out by personnel certified to EN ISO 9712, on site or at our laboratory in Thessaloniki.

PWHT

Post Weld Heat Treatment

Controlled heating, soaking and cooling of welds to reduce residual stresses and restore properties.

  • Pipelines & power plant piping
  • Manifolds & vessels
PRE

Preheating & Interpass

Preheating before welding and interpass temperature control to avoid cracking.

SR

Stress Relieving

Stress relief of fabricated components and repairs.

IND

Induction Heating

Induction units for fast, uniform heating with low energy loss.

REC

Recording & Charts

Multi-channel recorders with calibrated thermocouples and full charts per weld.

HDT

Hardness after PWHT

Hardness verification after treatment to confirm acceptance.

In the field

Our work.

Photos from our crews on recent projects. Click a photo to enlarge.

Codes & standards
ASME B31.1ASME B31.3ASME VIIIEN 13480EN ISO 17663AWS D10.10
Related projects

Where we applied it.

All projects
Post weld heat treatment, Agios Nikolaos CCGT (1/6)Post weld heat treatment, Agios Nikolaos CCGT (2/6)Post weld heat treatment, Agios Nikolaos CCGT (3/6)Post weld heat treatment, Agios Nikolaos CCGT (4/6)Post weld heat treatment, Agios Nikolaos CCGT (5/6)Post weld heat treatment, Agios Nikolaos CCGT (6/6)06.2021 – 11.2022
 

New CCGT 826 MW Power Plant, Agios Nikolaos Viotia

PAUTRT GammaPTMTUTHDTPost Heat Treatment
Komotini combined cycle power plant03.2023 – 02.2025
 

876.6 MWe Komotini Combined Cycle Power Plant

PAUTRT X-rayRT GammaPTMTUTHDTPMIPost Heat Treatment
Non Destructive TestingAdvanced NDTMaterials TestingInduction Heating

Have a project that needs inspecting?

Request a quote +30 2310 788 799