Pressure Vessel fabrication, manufacture, and repair. The STI Group offers comprehensive pressure vessel fabrication services to our customers.


Project Execution


Uncompromising safety



Built to your exact specifications

Pressure Vessel fabrication, manufacture, and repair.  The STI Group offers comprehensive pressure vessel fabrication services to our customers. We manufacture to ASME Section VIII, Div. I, certified and holding ASME U,S and NBIC R stamps. The STI Group produce shop drawings and utilize advanced pressure vessel software for all vessel manufacturing. Our niche is cylindrical pressure vessels 8’ diameter or smaller, in all grades of carbon steel, stainless steel pressure vessels, and many other materials.

The ASME pressure Boiler and Pressure vessel design Code, adhering to ASME codes, is recognized worldwide. However, we are not limited to only ASME but also have the capability to build vessels to the requirements of the US Coastguard, American Bureau of Shipping, Lloyd’s of London, Det Norske Veritas and other national and international jurisdictions.

Many purchasers of non-pressure tanks specify ASME Code construction in order to take advantage of the strict quality controls that the ASME demands. All of The STI Group tanks, even non-code, are built to code standards, pressure tested, and fully documented before shipment.

The STI Group vessel facilities location, backed by our team of mechanical engineers, has years of experience in metal plates processing, welding, assembling, and installing of high-quality, ASME pressure vessels. Our expertise encompasses fabricating high-pressure and low-pressure vessels, cooling and heating systems, as well as secondary containment storage tanks. Additionally, we offer cost-effective installation and pressure vessel equipment repair.

Utilizing state-of-the-art facility operations under strict safety standards and quality standards, our inspection and testing processes, including nondestructive testing and magnetic particle testing, ensure that each product operates efficiently under ambient pressure, safely, and durably. We guarantee a steadfast commitment to added-value craftsmanship and fast turnaround. Our pressure vessels are designed to be both affordable, built to last, and will provide you with uncompromising service in your industrial environments.

Vessels, including fabricated custom pressure vessels can include specific requirements, calculations, and tolerances such as:

  • Horizontal or vertical design
  • Seismic and wind loading
  • Modular packages
  • Customized sizing
  • Maximum stress resistance
  • Extreme chemical and solvent tolerance
  • And often include accessory piping, valves, ladders and platforms and sheet metal attachments

STI Group adhering to ASME codes and national board standards, serves the following industries:

  • Petrochemical
  • Chemical
  • Refining
  • Oil & Gas Production
  • Drilling
  • Energy
  • Power Generation