Services that ST&I provides are as follows:

Welder Qualifications
Project/Contract Specific Documentation and Turnover Packages
Welding Procedure Qualification (PQR & WPS) Development
Destructive and Non-Destructive Testing of Welds
Destructive and Non-Destructive Testing of Protective Coatings and Linings
Structural Steel Inspection & High-Strength Bolting Inspection and Qualification
Written QA/QC Procedures & Development including Company Specific Quality Manuals
Protective Coatings Inspection and Documentation to meet Numerous Industry Requirements
Certification of Surface Preparation and Coating Application, Including Powder Coating
Corrosion, Coating Failure and Structural Impact Analytics
Arbitration and Audit Support
Document Control

Personnel Certifications held at ST&I are accredited though:

National Association of Corrosion Engineers (NACE)
American Society of Non-Destructive Testing (ASNT)
American Welding Society (AWS)
Society for Protective Coatings (SSPC)