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Our Story

After 35 years in the steel business, our journey continues.

Time Line

Trinity Products was founded in 1979 in St. Charles, Missouri
as a steel pipe supplier with a focus on the heavy civil construction industry (piling, road boring and utility contractors). Management moved quickly to secure additional property in order to build Trinity's first fabrication facility. Adding fabrication capabilities allowed Trinity Products to branch out into the advertising industry by adding sign pole and billboard structure fabrication to the product line.

St. Charles Yard

In 1999, Trinity Products relocated to O'Fallon, Missouri and once again expanded the fabrication facility. Additions of automated equipment (multi-torch burn table, beam-liner, ironworker) allowed Trinity Products to continue to expand the sign pole and billboard divisions of the company. It also allowed Trinity Products to branch off into light custom fabrication. The company also added a drafting/detailing department to help in that transition. Shortly thereafter, a coating facility was added to address the growing need of projects that required paint or special coatings. Business continued to grow and Trinity Products evolved into a full service fabrication facility.

OFallon MO

Ownership had always envisioned owning a spiralweld pipe mill. In 2006 that vision became reality when Trinity Products started construction of a new facility in St. Charles, Missouri to house a state-of-the-art PRD spiralweld pipe mill. In March of 2007, Trinity Products produced the first piece of pipe at the new facility.


With a commitment to continuous improvement, management has seen business continue to flourish for both fabrication and pipe production. On the fabrication side, Trinity Products has become AISC certified for Standard Steel Building structures as well as SSPC-QP3 certified for the application of protective coatings. On the pipe production side, Trinity Products has exceeded their own expectations with rapid growth in production capabilities and quality of the product produced.

Trinity Products currently employs approximately 150 individuals company-wide. Management is also committed to the open book management philosophy. Open book management encourages employees to be involved in the decision making process on areas that are directly related to their job. The company shares financial information at regular monthly meetings, asking for input and suggestions on current issues. Benchmarks are established and goals are set. As each goal is met, Trinity Products employees share in the reward.

All of the hard work and dedication to growth at Trinity Products has not gone unnoticed. In July of 2001, the state of Missouri recognized the company with the Governors Achievement Award for Economic Development and the 2001 Innovative Training/Workforce Development Award for the implementation of Open Book Management. In 2013, Owner, Robert Griggs was a finalist for the Central Midwest Region of the Ernst and Young Entrepreneur of the Year.

Latest Publications

Industry Scoop May 2016

Roland Industry Scoop - May 2016

Trinity Products was featured in the May 2016 issue of Roland Industry Scoop's "A Salute to a Customer" feature.

Read this article to hear about our mission and how we strive to achieve it.


Read Article


We maintain a commitment to serving our customers, employees and continuous improvement.


Customer Satisfaction


Amazing Company

 Since 1979, Trinity has been delivering quality steel products, and we’re always looking to grow
our team with folks who are honest and committed to giving 100%.

Employment Benefits

Competitive Salaries
Personal Health Incentives*
Bonus/Profit Sharing
Full Health Coverage
Open Book Management
Privately Owned
Casual Dress Attire

*Living Well at Trinity

Trinity Products supports employees in taking charge of personal health and offers a variety of programs and incentives to do so, including discounted gym memberships, team building workouts, and group triathlons.

Team Up!

Team Trinity is just 143 people – a small team for what we’ve accomplished so far.
Each week brings new challenges and it’s our job to meet them.

Meet the Team

Available Positions

Business Development

If you are currently an incredibly talented Sales Professional looking to reach your full potential we might have an opening for you. Do you feel like you could do so much more with the right company and the right opportunity? We are an established and profitable company looking to take the business to the next level. We are looking for a special person with a strong desire to make a difference.

If you’re ready to create your legacy in a new career where you can be a vital part of a winning team, where you’re recognized, respected, and valued for a job well done, this position could be for you. We are poised for substantial growth with the right person.

  • High Level of self discipline
  • Goal oriented
  • Excellent written communication skills
  • Strong belief in the customer being first
  • Succeed in a fast paced environment

Quality Control Inspector

We are in need of a Quality Control Inspector for our custom steel fabrication shop located in O’Fallon, MO.  Candidate will need to be a “finisher” (follows through on tasks beginning to end), accurate, detail oriented, and possesses “roll up your sleeves and get the job done” work ethic.”

In exchange we offer a complete compensation package (salary commensurate with experience, group health insurance package, variable production incentives, profit sharing, 401(k), etc.) and a modern, casual working environment.  If you are not willing to commit 100%+ please do not apply.

Primary Responsibilities

Will vary depending upon the size of each project and duties may include, but are not limited to the following:

  • Perform daily quality inspections (receiving, in process, and final) which include burned piece parts, holes, cut to length material, fit-up of assemblies, visual inspection of welds, and DFT readings on coated material.
  • Assist in managing quality issues from customers
  • Report non-conformities of product/processes
  • Oversee various weld testing by production
  • Provide training regarding quality standards and customer expectations

Job Requirements

  • Ability to read and interpret blueprints and drawings
  • Previous experience in a steel fabrication environment
  • Knowledge in welding processes, including FCAW (flux core welding) and SAW (submerged arc welding)
  • Excellent communication skills
  • Attention to detail
  • Ability to read a tape measure and other measurement devices
  • Strong computer skills, including Microsoft Office
  • Prior welding experience is a plus
  • CWI or Level II VT certification is a plus
  • Ability to read, write, and interpret a WPS is a plus
  • Knowledge of AISC certification(s) standard(s) is a plus
  • At least one year prior QC experience preferred

Apply online. It’s that easy!

Apply Online Now

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