Mechanical Fabrication

DTI has an extensive engineering and fabrication capability. Our corporate headquarters facility encompasses 70,000 total square feet under roof and another 50,000 square foot lay-down area.

We have certified welders in every category of welding consistent with Industry Standards including SMAW, GTAW, GMAW, and FCAW.

We use proven techniques for pipe fitting and welding to ensure full penetration welds with X-ray quality workmanship for both pipe and structural welding. Our welding is approved on pipe up to 16” in diameter, and structural up to 1” in thickness. We are qualified for Carbon Steel, Stainless Steel, Copper Nickel, Super Duplex Stainless Steel, and Inconel.

Our shop has produced fire protection skids 18 meters in length, 4 meters wide, and weighing over 17 tons. We specialize in large bladder tank and deluge valve skids, as well as enclosed fire pump packages with fully insulated buildings.

  • 10 in. Pneumatic Pipe Beveller
  • Pipe Threading Machine
  • Two (2) 20-ton Bridge Cranes, 5-ton & 3-ton Bridge Cranes
  • 60-ton Ironworker
  • Multiple Forklifts
  • High Capacity Pivoting Band Saw
  • High Speed 2-6” Pipe Beveller
  • Hydraulic Pipe Bender
  • High Voltage Welding Machines
  • Multi-station Hydrostatic Test Stand
  • Pipe Roll-Out Machines
  • 88 Ton Notching/Coping Ironworker
  • Automatic Submerged Arc Welding Machine with 3000lb Positioner
  • 3-Axis Computer Controlled Pipe Cutting Machine
  • CNC Lathe w/Bar Feeder
  • CNC Vertical Milling Center
  • Multiple Drill Presses
  • Hydraulic Roll Bender
  • Multiple Fixed Jib hoists


We are capable of passing all NDT requirements including X-ray, magnetic particle, dye penetrent, or simply a basic hydrostatic test. Our hydrostatic testing is done in accordance with ASME B31.3 or the project specification, whichever is more stringent. These tests are typically witnessed by an objective third party inspector.

Hydrostatic Test Report” PDF

Fire & Gas Panel Fabrication

DT has a UL508 electrical panel shop where Fire & Gas Control Panels are fabricated and assembled in an air conditioned environment. DT utilizes high quality electrical work practices and has the capability of providing UL 508 labeling on made-to-order control panels. Free standing or wall mount NEMA 1, 3, 4, 4X, 7, or 12 enclosures can be provided for the desired controllers. We can also provide electrical equipment compliant with non-US electrical standards such as CENELEC.

Our panel shop personnel are experienced with numerous lines of electrical controls including Notifier, Siemens (Cerberus Pyrotronics), Detector Electronics, Zellweger (Sieger), Spectrex, Scott Bacharach, Draeger, Gastech, General Monitors, MSA, and Allen Bradley PLCs.