{"id":42,"date":"2026-04-07T00:43:32","date_gmt":"2026-04-06T16:43:32","guid":{"rendered":"https:\/\/demowebdev.xyz\/petro\/our-services\/ndt-services\/liquid-penetrant-testing\/"},"modified":"2026-04-10T18:31:59","modified_gmt":"2026-04-10T10:31:59","slug":"liquid-penetrant-testing","status":"publish","type":"page","link":"https:\/\/demowebdev.xyz\/petro\/liquid-penetrant-testing\/","title":{"rendered":"Liquid Penetrant Testing"},"content":{"rendered":"\n
\n
<\/div>\n
\n
Home<\/a> \/ NDT Services<\/a> \/ Penetrant Testing<\/div>\n\n \n
\n
<\/span>UT<\/span><\/div>
<\/span>RT<\/span><\/div>
<\/span>MPI<\/span><\/div>
<\/span>PT<\/span><\/div>
<\/span>VT<\/span><\/div>
<\/span>UTTG<\/span><\/div>
<\/span>PMI<\/span><\/div>
<\/span>HT<\/span><\/div>
<\/span>RI<\/span><\/div>\n <\/div>\n\n

Liquid Penetrant Testing (PT)<\/h1>\n
<\/div>\n

Surface-breaking defect detection in all non-porous materials \u2014 stainless steel, aluminium, and alloys.<\/p>\n <\/div>\n<\/div>\n\n\n\n

What is PT?<\/span>

Liquid Penetrant Testing<\/h2>

PT detects surface-breaking discontinuities in all non-porous materials \u2014 metals, plastics and ceramics. A liquid penetrant is applied to the surface, drawn into surface defects by capillary action, and revealed with a developer.<\/p>

PT is ideal for non-ferromagnetic materials like stainless steel, aluminium and copper alloys where MPI cannot be used.<\/p><\/div>

<\/div><\/div><\/div><\/section>\n\n
How It Works<\/span>

Inspection Process<\/h2><\/div>
01<\/div>

Clean Surface<\/h3>

Thoroughly clean and dry the inspection surface to remove all contaminants.<\/p><\/div>

02<\/div>

Apply Penetrant<\/h3>

Apply liquid penetrant and allow dwell time (10\u201330 minutes) for capillary action.<\/p><\/div>

03<\/div>

Remove Excess<\/h3>

Remove excess penetrant using the appropriate remover technique.<\/p><\/div>

04<\/div>

Apply Developer<\/h3>

Apply developer to draw trapped penetrant out of defects.<\/p><\/div>

05<\/div>

Inspect & Report<\/h3>

Inspect under white light or UV and document all indications.<\/p><\/div><\/div><\/div><\/section>\n\n

Applications<\/span>

Where It Is Used<\/h2><\/div>
  • \u25b8<\/span>Stainless steel and non-ferromagnetic weld inspection<\/li>
  • \u25b8<\/span>Aluminium and titanium fabrication<\/li>
  • \u25b8<\/span>Casting and forging surface examination<\/li>
  • \u25b8<\/span>Machined component inspection<\/li>
  • \u25b8<\/span>Turbine blade and rotating equipment<\/li>
  • \u25b8<\/span>Pressure vessel and heat exchanger inspection<\/li>
  • \u25b8<\/span>Repair weld examination<\/li>
  • \u25b8<\/span>Pre-service final inspection<\/li><\/ul><\/div><\/section>\n\n
    Our Work<\/span>

    Inspection Gallery<\/h2><\/div>
    \"PetroNDT\"<\/div>
    \"PetroNDT\"<\/div>
    \"PetroNDT\"<\/div><\/div><\/div><\/section>\n\n

    <\/span>Frequently Asked Questions<\/h2>