Our Certifications   We Maintain Active ASME Certificates OST Service's welders are fully trained, qualified, experienced, and certified in accordance with ASME.    NBIC "R"  R4479              ASME "S" 30619           ASME "U" 30620       Pressure Equipment Directive - European Standards OST Services has developed and implemented a Quality Management System specifically in accordance with normative referenced European Standards for metallic and welding, destructive and nondestructive testing and examination.  Currently, we are the only laboratory in the United States that has this certification.  If you require any testing or inspection services related to the Pressure Equipment Directive, please contact Jim Giarrusso or Paula Greene. Pressure Equipment Directive Certification