RO EN

Services

Five services. One standard of rigour.

You already know what each method does. Here you can see how we apply it, step by step, and what you receive at the end.

Not sure which method you need? Describe the job and we will recommend one.

Visual testing

The first check on any welded joint: weld geometry, surface defects, corrosion, distortion and the general condition of the component.

How we do it

  1. We check the conditions: access, lighting and surface cleanliness.
  2. We examine directly or, where access is limited, with optical aids.
  3. We measure with weld gauges and measuring instruments.
  4. We compare our findings with the required quality level.
  5. We document the findings in the report, with photographs.
Profile of a butt weld, with the weld width and reinforcement dimensioned and an undercut marked at the weld toe. width reinforcement undercut base metal weld
On the weld we measure width and reinforcement and look for surface defects such as undercut.
Reference standards
EN ISO 17637 · EN ISO 5817
You receive
Visual testing report, with photographs
Request a quote for VT

Penetrant testing

We detect surface-breaking discontinuities — cracks, pores, laps — on any non-porous material, including stainless steels and non-ferrous alloys.

How we do it

  1. We prepare the surface. We clean and degrease the area so that the penetrant can enter any discontinuity.
  2. We apply the penetrant and observe the dwell time set out in the procedure.
  3. We remove the excess from the surface without washing the penetrant out of the discontinuities.
  4. We apply the developer, which draws the penetrant back to the surface and makes the indications visible.
  5. We evaluate and document every indication against the acceptance criteria, with photographs.
Cross-section of a part with a surface crack. The penetrant trapped in the crack is drawn out by the developer and forms a visible indication. developer indication penetrant in crack base metal
The developer draws out the penetrant trapped in the crack. The resulting indication is wider than the crack itself, so it is easy to see.

Magnetic particle testing

We detect surface and near-surface discontinuities — cracks, lack of fusion, laps — in ferromagnetic materials such as carbon and low-alloy steels.

How we do it

  1. We prepare the surface: we remove rust, slag, thick paint and oil from the test area.
  2. We magnetise the area in two approximately perpendicular directions, so that cracks are found whatever their orientation.
  3. We apply the magnetic particles while the area is magnetised.
  4. We interpret the indications: the particles gather wherever a discontinuity interrupts the magnetic field.
  5. We evaluate and document every indication against the acceptance criteria, with photographs.
Magnetic particle testing: the yoke magnetises the part, the crack interrupts the magnetic field and the particles gather above the crack to form the indication. indication magnetic yoke magnetic field crack
The crack interrupts the magnetic field, which leaks out of the material right above it. The particles gather there and outline the crack.
Reference standards
EN ISO 9934-1 · EN ISO 17638 · EN ISO 23278
You receive
Test report, with photographs
Request a quote for MT

Ultrasonic testing

We detect discontinuities inside the material — lack of fusion, inclusions, cracks — and measure the actual wall thickness where corrosion or erosion has thinned it.

How we do it

  1. We calibrate the instrument on reference blocks before every job.
  2. We select the probes and beam angles to suit the thickness and geometry of the part.
  3. We scan systematically the weld and the adjacent base metal.
  4. We evaluate every indication by amplitude, position and length.
  5. We report the results, with the position of each indication.
Ultrasonic testing of a weld: the angle probe moves along the plate, the beam passes through the weld and the echo from the discontinuity appears in the gate on the A-scan display. discontinuity probe A-SCAN GATE AMPLITUDE 82 %
The angle probe sends the beam through the weld. When it meets a discontinuity, its echo appears in the gate on the A-scan display.
Reference standards
EN ISO 16810 · EN ISO 17640 · EN ISO 11666
You receive
Ultrasonic testing report
Request a quote for UT

Hardness testing

We measure the hardness of the base metal, the heat-affected zone and the weld metal directly on the part, to confirm that they are within the required values.

How we do it

  1. We define the measuring points in the base metal, the heat-affected zone and the weld, according to the procedure or your drawing.
  2. We prepare the surface by fine grinding, so that the result is not affected by rust or roughness.
  3. We verify the instrument on reference test blocks before measuring.
  4. We measure several values at each point and calculate the average.
  5. We report the values by zone (HB, HV or HRC), compared with the required limits.
Hardness measured along a line across the weld: base metal, heat-affected zone and weld metal, with each value compared with the required limit. HV required limit BM HAZ WM HAZ BM
We measure along a line across the weld: BM – base metal, HAZ – heat-affected zone, WM – weld metal. Each value is compared with the required limit.