Specialty Welding

STI Group provides premium specialty welding and field services. Our highly skilled specialty welders have the metallurgical expertise and field experience it takes to weld on a full range of materials and industrial equipment. While our rigorous quality practices result in weld-rejection rates that average less than 1 percent, Our meticulous planning and scheduling, project management also ensure a smooth, seamless experience for our customers with minimal disruption to the job site.

Specialty Welding On a Full Range of Alloys and Materials

STI Group’s specialty welding services extend to a full range of different metal alloys and materials. We provide superior quality welding services for:

  • Titanium
  • Austenitic Stainless Steel
  • Nickel Alloys
  • Duplex/Super Duplex
  • Manuarite
  • Ferritic Chromes
  • Inconel/ Incoloy
  • Hastelloy
  • HK 40 & 50 HP Modified
  • And more!

Certified and Quality Controlled

STI Group emphasizes quality, safety, and service in everything we do in field construction. All welders are tested under ASME Section IX welding procedures and hold the certifications they need to consistently deliver safe, reliable, efficient results in the field at all different kinds of job sites


  • ASME “U” & “S” Stamps
  • 数控
  • NBIC “R” Stamp
  • API
  • AWS

Specialty Welding Capabilities

STI Group features multiple welding and fabrication facilities with hundreds of thousands of square feet of workspace and state-of-the-art equipment. This allows us to work on a full range of welding projects including:

  • Piping
  • Boilers
  • Ethylene Heaters
  • Industrial Furnaces
  • 塔s
  • Heat Exchangers
  • Corrosion recovery
  • Pressure Vessels and Vessel Repair or alterations
  • Channel modifications and repair
  • 气体ket surface weld build-up, repair and overlay
  • Installation and repair of nozzles and flanges
  • Tube-to-tubesheet welding
  • Pipe fabrication and repair
    • All schedules

Experience You Can Trust

STI Group has over 35 years experience in the industrial sector and works closely with customers to ensure that their welding jobs are delivered on-time, on-budget, and with superior quality and dependability. We have the resources, experience, and expert knowledge it takes to deliver on speciality welding projects of all scopes and specifications.