Stainless steel access ports are openings designed for inspecting, maintaining, and replacing equipment or components made of stainless steel. These ports are typically mounted on the surface of the equipment or components and can be removed or replaced using a tool or manual labor.

There are many types of stainless steel inspection openings, commonly including rectangular, oval, threaded, socket-welded, and butt-welded inspection openings. Among them, rectangular and oval inspection openings are the most common types, featuring a rectangular or oval opening that can be removed or replaced using tools or wrenches.