Dye Penetrant Inspection is a cost effective way of locating surface-breaking defects in metals.

DPI is used detect forging, casting and welding surface defects such as hairline cracks, surfaces porosity, fatigue cracks on in-service components as well as leaks in new products. Arcflex has the very latest facilities and testing equipment at our disposal with staff who have the knowledge to get the best out of it and we now perform fluorescent and colour contrast liquid penetrant flaw detection in house.

  • Choose Arcflex for DPI

    The process is suited for the detection of surface breaking discontinuities in metallic and some non-metallic materials. Our assemblies are designed and manufactured to the highest standards with full pressure and leak testing available where necessary we can provide additional non destructive testing to verify our products integrity. Non-destructive testing can be also be performed on our assemblies upon request.We can work to any standard you require but generally follow the following;

    ASTM E1417: Standard Practice for Liquid Penetrant Examination.

    BS EN ISO 3452-1 Non-destructive testing – Penetrant testing


    Arcflex have decades of experience and expertise at our disposal. All of our NDT personnel are qualified to Level 2 in conformance to American Society for Non-Destructive Testing Recommended Practice SNT-TC-1A. If you would like to know anything else about our Dye penetrant inspection then please get in touch with us today and we will be happy to help with any enquiries you may have.