Access Plug Flange, Inc.

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).