Quality Assurance for Your Success

Johnstedt LLC – Precision. Expertise. Assurance.
At Johnstedt, we specialize in delivering technically driven, modern solutions for Quality Assurance and Quality Control across the refining and petrochemical industries. Whether you need specialized consulting or experienced QA/QC staffing, our team brings unmatched expertise to ensure compliance, performance, and peace of mind on every project — large or small.

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Onsite Quality professionals contracts tailored to your project needs.

Vendor surveillance ensuring compliance and quality standards meeting client specifications.

Consulting expertise in quality assurance / quality control for various industries.

Quality Assurance for Your Projects

At Johnstedt Quality Assurance, we ensure excellence in refinery, petrochemical, chemical industries through onsite contracts and vendor surveillance, dedicated to enhancing the quality of your projects.

"Exceptional service and support provided."

Joe S.

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Quality Assurance Services

Dedicated to enhancing project quality in refinery, petrochemical, chemical industries through expert onsite contracts and surveillance. Ensuring your project is completed to your specifications.

Onsite Quality Checks

We provide thorough onsite quality checks to ensure compliance and excellence in your projects.

Vendor Surveillance

Our vendor surveillance services guarantee that your suppliers meet the highest quality standards consistently.

Expert Quality Consulting and Staffing for your project.

Our expert consultants offer tailored quality assurance strategies to optimize your project's success.

Quality Projects

Our projects ensure excellence in quality for various industries.

An aerial view of an industrial facility with large, circular tanks arranged in a structured layout. Metal pipes and walkways crisscross between the tanks, and there are smaller structures and equipment situated around them. The surrounding area includes gravel and some paved sections.

Industrial Quality Control

Delivering top-notch quality assurance services for the refinery sector and more through onsite contracts and vendor surveillance, ensuring outstanding results for our clients.

Assurance Services

Focused on enhancing project quality through dedicated vendor surveillance and onsite staff, tailored to meet the specific needs of our clients in the refinery, petrochemical, chemical industries. We are committed to ensuring a safe, leak free start up of your maintenance, TAR, or new construction project.