Qualified Exotic welding


Qualified exotic welding is our specialty, and within this, there are no limits.

LKN WeldExo has worked for almost every industry, from aerospace to government, from oil to gas and from chemical to Defense.

In order to back these industries up with qualified and certified welds, we have the ability to qualify and certify all alloy in any welding position according to the necessary standards.

From the preparation and assembly of (preliminary) welding procedure specification (p)WPS, NDT reports and tests to obtain a PQR and/or WPQ.
Everything is according to, or based on, EN ISO 15614-5, ASME IX, AWS or any specific code/ customer specification and can be obtained in a short period.

PT, macro, tensile and bendtests can be executed inhouse or will be independently tested by a laboratory.

Example of 50+ WPQR 0,3-40 mm

  • PQR BW tube (ml) OD≥ 25 mm 1.5 -14.0 mm Alloy 800H (group P45) ASME IX
  • PQR BW plate (ml) 3.0 -40.0 mm  titanium grade 2 (group 51-52-53-54-61-62)  EN ISO 15614-5, ASME IX, AWSD1.9
  • PQR BW (sl) 1.0 – 6.4 mm Inconel 718 (group 111B) AWSD17.1
  • PQR FW (sl) ≥ 25 mm 1.0 – 6.4  Hastelloy X (group 111A) AWSD17.1
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