About Us

Access Plug Flange, Inc. began in 1994, when David D. Barton was issued a patent for the Access Plug Flange. This was a product that would set a new standard for inspection ports, dramatically improving safety and reliability in non-destructive testing (NDT). In the time since then, Access Plug Flange, Inc., and our sister company, Southern Stud Weld, Inc., have grown into international manufacturers and providers of a wide range of standard-setting, specialized products for customers in the NDT field working with insulated and non-insulated pipes and vessels.

APF specializes in inspection ports designed to allow you to "match your inspection port to your process temperature", ranging from cryogenic temperatures (-185° F) to steam (1,200° F).

Access Plug Flange, Inc., and Southern Stud Weld, Inc., have grown from two start-ups into worldwide corporations in their respective fields. This is because of our constant commitment to providing quality products at fair prices, excellent service, and building teams of individuals who hold values such as quality, honest and integrity close to their hearts. We are a stable, dependable company that will be there for you when you need us. Peruse our site and contact us today to speak with one of us about our quality products and their inherent advantages.