TWI provides countless services to a variety of customers.

With our highly diversified team we can provide versatility

and reliability to our customer's specific industrial needs.


  • Boiler and Pressure Vessel Repair and Alterations
  • On-Site Welding
  • Exotic Metal Procedures and Qualifications
  • Authorized Inspections
  • Certificate No. R-9463
TWI is accredited with the National Board "R" Stamp Certification of Authorization through the NBIC for the repair and/or alterations of boilers, pressure vessels and other pressure retaining items. All of our "R" Stamp Repairs are performed in accordance with the requirements of the National Board. This department works congruently with the TWI Safety Program, TWI Quality Control Plan and specifically with our customer’s requirements.