PERMATANK® double‐wall jacketed underground storage tank features an inner steel tank coupled with corrosion resistant secondary containment.

Shop Fabricated Tanks

Tank standards and specifications are cited in regulation throughout the United States and in demand by customers worldwide.

Shop Fabricated Tank Section

Steel Water Pipe

STI/SPFA members build steel water pipe that meets or exceeds the requirements of ASCE, AWWA, and SWPMTAC standards.

Steel Water Pipe Section

Field Erected Tanks

Members fabricate steel industrial and water tanks that meet or exceed the requirements of AWWA, NSF, API, and industry standards.

Field Erected Tank Section

Pressure Vessels

Member pressure vessels are used by the petrochemical, food, power generation, and hazardous material storage industries.

Pressure Vessel Section

STI Tank Technologies

STI/SPFA is recognized for our leading tank technologies with features such as corrosion prevention and fire protection.


The STI SP001 standard provides a means for aboveground storage tank owners to comply with EPA mandates.


Join the STI/SPFA to receive the latest industry news and information, network with peers, and strengthen your business.

Featured Affiliate

Steel Dynamics, Inc.

Steel Dynamics is one of the largest steel producers and metals recyclers in the USA. Steel Dynamics produces steel products, including hot roll, and coated sheet steel, structural steel beams and shapes, other products, our new Sinton mill will produce steel plate from coil.

“Without STI/SPFA membership, we probably wouldn’t be in the position we are today.”

Jon Ward
Ward Tank & Heat Exchanger

Beeline Prescription Safety Eyewear Program for STI/SPFA Members

The Beeline Prescription Safety Eyewear Program for STI/SPFA members includes multiple safety frames to choose with single, bifocal, and progressive lens styles. An optician will assist you in selection from approved frames, take the necessary measurements, and process the order.  Your new prescription safety glasses will be available for pick

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Are You Focusing on Rags or Riches?

Damian Lang CEO Malta Dynamics I was working the Construction Expo show in Las Vegas recently where I bumped into Pat who is my best friend from high school. We talked about the good old days and the night 40 plus years ago when he won my old car in

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Safety Library

Access important safety topics affecting the steel fabrication industry including fall protection, confined space, welding, and more.

Tank Integrity Management

STI/SPFA’s Tank Integrity Management Course is designed to provide the knowledge you need and recognize your expertise.

STI/SPFA Product Awards

The STI/SPFA Product Awards recognize steel construction product achievements that exemplify the steel tank industry.

PERMATANK® Underground Storage Tanks

2023 STI/SPFA Annual Business Meeting