OD

{
  "id": "MLC-T-OAG-004398",
  "term": "OD",
  "field": "Oil and gas",
  "definition": "The external dimension across a cylindrical component, such as drill pipe, casing, or a downhole tool. This outer diameter (OD) measurement dictates whether an object can pass through restrictions like a previously set casing string or a blowout preventer. It is expressed in inches or millimeters and, along with wall thickness, defines the pipe's weight and strength specifications.",
  "subject": "Drilling",
  "url": "https://mlchart.com/terminology/oil-and-gas/od/"
}