A red and white painted pipe with the words " gas parosity exposed by penetrant in machined costing surface ".

Delivering Excellent Inspection Services and More

CTC is an innovative and progressive Nondestructive Testing (NDT) and inspection company offering a full list of field inspection services throughout the West Coast. Our primary focus is northern California, however, we do provide mobile services wherever the project takes us.

Key Personnel

Mason J. Stoll, President

ASNT Level III, Certification Number 90786, an American Welding Society Certified Welding Inspector 08011641, American Petroleum Institute API 510 Inspector, Certification Number 59041

Mason has been working in the Nondestructive Testing and Inspection industry since 1984. His vast experience covers working in the aerospace and defense industry, aviation industry, Petrochemical industry, pipeline industry, pressure vessel industry, casting and forging industry, welding industry, and inspection on everything from aircraft to nuclear power plants.

A person with an open mouth and a closed face.
A person with an open mouth and a closed face.

James Banford, Safety/Quality Control Manager

ASNT Level III, Certification Number 160468
American Welding Society Certified Welding Inspector 03030031

James has worked for CTC for over 20 years of experience with certifications in all methods of Nondestructive Testing and Welding Inspection. James is a valued asset in all aspects of the company and is our quality control and safety manager.