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Magnetic Particle Testing (MT) in New Hampshire

Roadsafe LLC supports municipalities, fabricators, contractors, and heavy truck repair shops with local, magnetic particle testing (MT) services in New Hampshire and throughout New England. Our in-house ASNT NDT Level III oversees our NDT program per SNT-TC-1A. We have experience performing non-destructive testing to many standards and on many types of structures.

NDT Services

Ultrasonic Testing (UT)

  • Thickness Surveys
  • Weld Examination
  • Pin, Bolt, & Plate Testing
  • Crack Detection & Sizing

Magnetic Particle Testing (MT)

  • Weld Examination
  • Base Metal Testing
  • Crack Detection & Sizing
  • MC-330 & MC-331 cargo tanks

NDT Information Sheets


Structural Testing for Municipalities

Structural Testing for Municipalities

Testing for Fabricators & Contractors

Structural Testing for Fabricators & Contractors

Weld Testing for Heavy Truck Repair Shops

Weld Testing for Heavy Truck Repair Shops

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Common Applications of Magnetic Particle Testing (MT)

Magnetic Particle Testing is often used for ensuring compliance of welded connections in pressure vessels, bridges, piers, structural framing, bobtails and propane tankers such as MC-330 & MC-331 cargo tanks, construction and maintenance equipment.

Useful to metal fabricators, general contractors, heavy truck and railcar repair shops, pressure vessel owners and inspectors, as well as municipal facilities.


Magnetic Particle Testing (MT) in New Hampshire



Magnetic particle indication
Magnetic particle indication
Magnetic particle indication

Magnetic particle testing (MPT) is commonly used throughout New Hampshire on welds, bridges, pressure vessels, MC-330 & MC-331 cargo tanks, and other safety-critical components to detect cracks and other defects where they may propagate and cause unsafe conditions. MPT is a nondestructive method used on ferromagnetic materials to find surface and near-surface defects such as cracks, laps, seams, and lack of fusion. The part is magnetized and dry or wet (visible or fluorescent) magnetic particles are applied. Defects create magnetic leakage fields that attract the particles, forming visible indications. The surface must be clean and free of scale, dirt, or paint.




crack in weld
crack in motor shaft
crack in bridge girder
crack in MC-330 tank
crack in railcar gear
crack in ship anchor guide channel

New England

Magnetic Particle Testing Service Area

We serve all New England states and municipalities, including:

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Roadsafe LLC