AGI is a full service API 620/650/653 tank repair and alteration contractor. As a full service company, AGI is able to meet customer repair and maintenance needs quickly and cost effectively. We provides routine maintenance services as well as custom repairs and replacements. Our team has the technical expertise to evaluate the specific conditions and determine the most appropriate corrective actions to be taken.

  • API 653 inspections, ULC S676 and
  • STI SP001 inspections
  • NACE Coating inspections
  • Bottom replacements
  • Secondary containment tank bottoms and systems Shell repairs including out-of round or buckled tank shell
  • Fixed & floating roof repairs and replacements
  • Cone roof column and rafter repair and replacement
  • Externally raftered and API 620/650
  • Fire-fighting foam systems
  • Shell nozzles, manways and appurtenances
  • Tank relocation
  • Tank jacking and leveling
  • Tank foundations
  • Cathodic protection and leak detection
  • Internal and external coatings
  • Insulation and cladding
  • Special design and engineering work
  • Specialty fabrication and construction project work


AGI has constructed field erected stainless and duplex tanks in a variety of sizes and locations. Our team has diverse experience with a wide range of exotic materials. The following projects are examples of our diverse portfolio:

Photo One

20’D X 14’H carbon steel tank, brick lined with Duplex 2205 nozzles and manway. Constructed on schedule in a

highly congested operating mill.

Photo Two

30’D X 65’H 304L stainless steel double wall tank set inside existing concrete tank. All nozzles fit on location.

Construction completed on schedule.

Photo Three

14’D X 32’H 316L stainless steel tank repair. Complete floor and tub ring replacement in a operating plant.

Repair completed on schedule.