Step Award for 2021


Dilling Group Accreditations

Dilling is proud to have earned and continue to maintain certifications from the organizations below. You can rest assured our skilled, professional employees deliver service second to none.

American Society of Mechanical Engineers (ASME)
• Certified for fabrication of high pressure process/power piping (PP stamp)
• Certified for alteration or repair of code vessels or systems (R stamp)
• Certified for fabrication of unfired pressure tanks and vessels (U stamp)

American Society of Heating, Refrigerating & Air Conditioning Engineers (ASHRAE)

American Welding Society (AWS) – In-house staff include:
• Certified Welding Inspector (CWI) – also establishes ASME IX weld procedures
• Associate CWI
• Qualified Visual Inspectors

ASME IX Certified Procedures and Welders for:
• Shielded Metal Arc Welding (SMAW) from 1/16” to 1” metal wall thickness
• Gas Tungsten Arc Welding (GTAW) from 1/16” to ¾” metal wall thickness
• Gas Metal Arc Welding (GMAW) from 1/16” to ¾” metal wall thickness
• Flux Core Arc Welding (FCAW) from 1/16” to ¾” metal wall thickness
• Orbital Welding (OW) for sanitary (Food Grade) tubing and piping
* Procedures and certifications listed above include a broad range of metals;
all carbon steels, all stainless steels, Alloy 20, Incoloy, and Hasteloy

Aravo - 3rd Party Safety Registration

Avetta (Formerly PICs Auditing) - 3rd Party Safety Registration

Associated Builders & Contractors, Inc. (ABC)
• Winner of multiple Awards of Excellence for many successive years

Department of Labor
Federally Approved Apprenticeship Program

EcoVadis - 3rd Party Social Responsibility Program

Environmental Protection Agency (EPA)
• Licensed for backflow preventer testing and refrigeration handling

FirstVerify - 3rd Party Safety Registration

ISNetword - 3rd Party Safety Registration

National Center for Construction Education and Research (NCCER)
Accredited Training Sponsor
Accredited Assessment Center

National Fire Protection Association (NFPA)

National Society of Professional Engineers (NSPE)

Staff Engineers are Degreed and Licensed Professional Engineers (PE’s)