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Fabrication of a Stainless
Steel Storage Tank for the
Chemical Industry
Design and Fabrication of an
Inconel and Stainless Steel
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Machining of Cast Stainless
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ASME

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. Once the assembly was welded and inspected, we employed pickling and passivation processes to ensure that all surfaces were free of any contaminants.

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
Primary:
Design
  • Seismic Design
  • Design Bottom Cone, Shell and Roof Thickness
  • Maximum Nozzle Loading w/ Doubler Plate Reinforcement Calculations
  • Generate 2D CAD Drawings
Fabrication
  • Plasma Cutting
  • Shearing
  • Welding
  • Plate & Angle Rolling
  • Press Brake Work to Form Cone Sections
Secondary:
Pickled and Passivated
Packaging
  • 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
Features
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
Pickling & Passivation Per ASTM A380/ A967
Product Name API 650 Storage Tank

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