ServicesASME Pressure Vessels, Heat Exchangers and API Storage Tank Design and ManufactureCustom Equipment / Machine
Metal Fabrication and
Structural Steel Fabrication
Portable Emergency
ProjectsDesign and Fabrication of a
Stainless Steel Heat
Exchanger for the Chemical
Fabrication of a Stainless
Steel Storage Tank for the
Chemical Industry
Design and Fabrication of an
Inconel and Stainless Steel
Pressure Vessel for the
Power Generation Industry
Fabrication of an Inconel
Retort Assembly for the
Nuclear Industry
Machining of Cast Stainless
Steel Orbit Twist Out for the
Pulp and Paper Industry

Fabrication of a Stainless Steel Storage Tank for the Chemical Industry

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Conical Bottom Tanks API 650
Conical Bottom Tanks API 650

A client in the chemical industry approached Orbit Industries, LLC. in need of a complete design and fabrication of two custom stainless steel storage tanks. They were to be used within a chemical plant and needed to be constructed of .250", T-304L stainless steel. Our team of experts worked closely with the customer throughout the project to ensure all of their needs and specifications were met.

The storage tanks had to meet specific criteria such as seismic considerations, maximum nozzle load, a custom bottom cone design and shell, and heavy roof thickness. We generated 2D CAD drawings, and with customer sign off we began fabrication. Tank construction began with plasma cutting and rolling to form the tank walls and bottom cone sections. The bottom cone sections were formed using our press brake.

The storage tank was 20'-0" high, had a diameter of Ø10'-0", and a volume of 7,500 gallons. It featured several special design elements, including a conical bottom and internal steam pipe heating coils, while maintaining tolerances of ±1/8".

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False Bottom Tanks
False Bottom Tanks
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26 Foot Tank and Piping
26 Foot Tank and Piping
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API Mixing Tank
API Mixing Tank
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API650 Storage Tank with Coil
API650 Storage Tank with Coil


Fabrication of a Stainless Steel Storage Tank Project Highlights

Product Description These custom API 650 storage tanks are used within a chemical plant.
Capabilities Applied/Processes
  • Seismic Design
  • Design Bottom Cone, Shell and Roof Thickness
  • Maximum Nozzle Loading w/ Doubler Plate Reinforcement Calculations
  • Generate 2D CAD Drawings
  • Plasma Cutting
  • Shearing
  • Welding
  • Plate & Angle Rolling
  • Press Brake Work to Form Cone Sections

  • Wood Covers w/ Shrink Wrap Over Open Flanges
Overall Part Dimensions
Material Thickness: .250"
Diameter: Ø10'-0"
Height: 20'-0"
Volume: 7,500 Gallons
Tightest Tolerances ±1/8"
Material Used T-304L Stainless Steel
Material Finish Hot Rolled Mill Finish
Vertical Storage Tank
Conical bottom
Flanged and Dished top head Roof
Steam Pipe Heating Coil in Shell
In process testing performed Hydro Test
Industry for Use Chemical
Turn Around Time 8 Weeks
Delivery Location Washington State
Standards Met
Customer Supplied Concept Drawings
API 650 Appendixes JS
  • Design
  • Fabricate
  • Hydro Test
Product Name API 650 Storage Tank

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