tireless focus on

reliability, accuracy and innovation

 in powerful

testing technology

Call Us


We specialize in nondestructive testing for commercial and residential buildings, pharmaceutical, petro-chemical, refrigeration, electric utilities, railroads, paper mills and other industries.

From our headquarters located in New York City, we are able to service customers across the United States and worldwide.

What We Do.

Eddy Current Testing

Eddy Current testing is a technique based on passing a small electrical current through a metal. The probes then measure the response, which helps indicate the presence of a defect in a material.

Eddy Current testing is a perfect tool
for inspection of tubes in machines like:


  • Heat exchangers
  • Refrigeration systems
  • Commercial chilled water air conditioning units
  • Boiler tubes
  • Ship condensers
  • Stainless steal pipes

We Are

Certified Analysts

Certified Welding Inspection

A Certified Welding Inspector is an individual who is responsible for overseeing all the activities and duties of the welding staff and ensuring that everything is in proper working manner. A welding inspector’s job is to make sure that the welders work within the set quality and deadline

Our Certified Welding Inspection services has been certified through the American Welding Society (AWS). CWI covers a wide range of welding inspection requirements. Along with our CWI services, other testing available includes; Eddy Current, Ultrasonic, Magnetic Particle, and Liquid Penetrant Testing.

Typical duties/responsibilities for quality may include, but are not limited to, the following:

  • Review customer provided welding specifications to ensure with weld procedures.
  • Coordinate with third parties in development of new or modified weld procedures & welder qualifications.
  • Witness welding during Welder Performance Testing to verify welder’s ability and perform visual testing prior to sending off for mechanical testing. Also, verify NDE on welded coupons if NDE is required.
  • Witness welding and record all essential and supplemental essential variables for new weld procedure qualifications prior to sending out for mechanical testing.
  • Maintain Welders Continuity Log to ensure all welders are current in their qualifications.
  • Perform visual inspection on all fabricated welds and material for PED, Code, and Third Party inspection orders.
  • Assist NDE personnel with any issues or uncertainty of customer specifications or code requirements.
  • Assist documentation with all welding and material related issues needed for data books and customer complaints.
  • Verify all material for PED and PED manufacturers certificate are valid at time of material manufacture.
  • Verify all material per Approved Manufacturer List on all applicable orders & ASME code orders also.
Boiler Inspections

State and Municipal laws involving Boilers and Pressure Vessels require that the operation of this type of equipment must comply with government regulations. Factors such as reliability, efficiency, cost and safety must also be taken under consideration.


We perform inspections of tubes, tube sheets and shell in fire tube Boilers.


We test Stem drums, Mud Drums, Headers, Fire boxes and economizer tubes, as well as the efficiency of Water Tube Boilers.


A leaking or malfunctioning tube in a Boiler can cost thousands of dollars in:

  • Production loss & higher insurance cost
  • Repair Expense
  • Unscheduled shutdowns
  • Unnecessary tube replacement or plugging
  • Legal costs for Safety violations & Accidents

Tri-State NDT utilizes Video, Visual, Flux Leakage, Eddy Current, Magnetic Particle and Ultrasonic examinations to evaluate a boiler’s integrity. Evaluation Reports include color coded tube sheet layouts with an indication of the damage in the tubes and tables, as well as recommendations.

Ultrasonic Testing

Ultrasonic Testing (UT) involves a beam of high frequency of mechanical vibration or Ultrasonic energy transmitted through the test material is intercepted and reflected by discontinuities back to the receiver. The travel time of the beam is being measured. Knowing the velocity of wave propagation and time the distance to the discontinuity is estimated. Information about the discontinuity such as location, size and type is displayed on the screen.

For Ultrasonic Testing, Tri-State NDT uses computerized Ultrasonic equipment that gives high accuracy of inspection. We specializes the following:


  • Welded Rails and Girders
  • Pipe joints with full and partial penetration
  • Frame structures (cranes, roofs, beams, sheet metal, bridges, etc.)
  • Pressure vessels, storage tanks
  • Bolts, shafts, crankshafts, axles
  • Gears, wheels, pins
  • Trucks, railroad cars
  • Bonding
  • Detection of surface cracks
  • Corrosion measurements
  • API 653/510 tank inspection
Magnetic Particle Testing

Magnetic Particle Inspection (MT) is a method of locating surface and subsurface discontinuities in ferromagnetic materials. It utilizes the fact that when the material or part under test is magnetized, magnetic discontinuities that lie in a direction generally transverse to the direction of the magnetic field will cause a leakage field, and therefore the presence of the discontinuity, is detected by the use of finely divided ferromagnetic particles applied over the surface, with some of the particles being gathered and held by the leakage field.

This magnetically held collection of particles forms an outline of the discontinuity and generally indicates its location, size, shape, and extent. Magnetic particles are applied over a surface as dry particles, or as wet particles in a liquid carrier such as water or oil.

Magnetic Particle Inspections are the best method for locating discontinuities on or near the surfaces of ferromagnetic materials:

  • Cracks
  • Laps
  • Seams
  • Cold shuts
  • Laminations

Tri-State NDT is a specialist in the inspection of ship reduction gears, cranes, bridges, beams, shafts, and pressure vessels.

    API Tank Inspections

    Above and underground storage tanks are required by Federal and State government agencies to have regular inspections.

    Companies which pertain to this schedule include:

    • Chemical
    • Petrol Chemical
    • Pharmaceutical
    • Some City Municipal agencies such as City Housing and Port Authorities, and so on

    Tri-State NDT, Inc. specializes in annual inspection in accordance with API Standards 510, 653 and 650.

    A Licensed Professional Engineer will evaluate tank integrity, suitability and life expectancy.

      Liquid Penetrant Testing

      Liquid Penetrant Testing (PT) and inspection is a nondestructive testing method of revealing discontinuities that are open to the surfaces of solid and essentially nonporous materials. Indications of a wide spectrum of flaw sizes can be found regardless of the configuration of the work piece and regardless of flaw orientations.

      Liquid penetrants seep into various types of minute surface openings by capillary action. Because of this, the process is well-suited to the detection of all types of surface defects such as:

      • Cracks
      • Seams
      • Porosity
      • Laps
      • Laminations
      • Cold Shuts

      Liquid Penetrant Testing is extensively used for the evaluation of wrought and cast products of both ferrous and nonferrous metals, power metallurgy parts, ceramics, plastics, and glass objects. Because of the vast differences among applications for penetrant inspection, two types of penetrants (Type I, fluorescent, and Type II, visible) are used.

      Liquid dye penetrant is a perfect method for examining for stress-corrosion and fatigue cracks that are insidious, usually there is very little or no warning of their presence.

      This is why it is very important to provide early detection on such structures as cranes, bridges, vessels, piping, where there is risk of possible hard economic consequences and loss of lives.

        Visual Inspection

        Visual Inspection is a nondestructive testing technique that provides a means of detecting a variety of surface flaws, such as:

        • Corrosion
        • Contamination
        • Surface finish
        • Surface discontinuities on joints (ex. welds, seals, solder connections, and adhesive bonds)

        Visual Inspection is the most widely used method for detecting and examining surface cracks, which is particularly important because of their relationship to structural failure mechanisms.

        Even when other nondestructive techniques are used to detect surface cracks, visual inspection often provides a useful supplement.

        Tri-State NDT uses the latest state-of-the-art Video Recording equipment that includes a Robotic crawler designed to inspect long horizontal distances through pipes and tubes. Video cameras can be inserted in openings as small as 0.250” in diameter.

        Flexible or rigid borescopes and magnifying systems are also used to enhance the Visual Examination and Inspection.

          Call Us Sometime.

          Questions about your job or a service we provide? Feel free to ask us anything! During office hours, you can also initiate a chat in the lower right hand corner during our office hours.

          This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

          Problem Solvers.



          The results from every visit are checked meticulously and thoroughly, leveraging the best from both A.I. and human analysis.

          Cost-Effective and high value

          Regular testing allows you to maintain your machinery effectively and reduces the chances of catastrophic equipment failure.


          We’ve been in business for over 30 years and are constantly refining our processes to make us more customer-centric.

          reviewed to ensure quality results

          Our analysts are in constant collaboration to make sure you get the most information possible from each visit.


          When you book your job, you need the report yesterday. Our analysts are ready to make sure you get results quickly.

          Performed by Experienced CWI and Weld Inspectors

          We staff talented certified CWI and Weld inspectors for our work, ensuring the best quality and most accurate results.

          Loss & Found.


          Defective Tube Rejection

          Rejected Tubes out of

          Total Tested ANNUALLY

          .52% of all tubes we test annually are found to be defective, due to a wall loss of greater than 50%.

          We recommended these tubes be plugged to prevent catastrophic failure in the future, on 301 sections or 252 A/C Units (out of 2880 sections and 1050 units tested per year)

          Book or Request a Quote

          Fields marked with an asterisk are required

          This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

          we’re happy to answer any questions you may have

          FIND US AT

          187 Victory Blvd.,
          Staten Island, NY 10301

          GIVE US A CALL

          Toll free: 866-879-3339
          Phone: 718-948-6226
          Fax: 718-689-9966

          OFFICE HOURS

          MONDAY 8:00-6:00pm
          TUESDAY 8:00-6:00pm
          WEDNESDAY 8:00-6:00pm
          THURSDAY 8:00-6:00pm
          FRIDAY 8:00-6:00pm
          SATURDAY Limited
          SUNDAY Limited