Mistras Group
Twin Ports Testing
1301 North 3rd Street 
Superior WI Wisconsin
United States 54880
Phone: 715-392-7114
Fax: 715-392-7163
Magnetic particle inspections are typically used to detect cracks, near surface inclusions, seams, laps and other discontinuities at or near the surface oferromagnetic metals (carbon steels, low-grade stainless, cast iron)
Tecscan