Interface control document. An interface control document (ICD) in systems engineering and software engineering, provides a record of all interface information (such as drawings, diagrams, tables, and textual information) generated for a project.
How well do you know your pipe flanges? Remember that flanges come in a variety of shapes and sizes to suit different applications. A flange is usually in the shape of a disc and is used to connect two tubes together or to connect a pipe to a valve, tee, choke or other component. Providing support and strength, two flanges are typically attached to pipe ends with a gasket in between.
what is PN for a flange is it Pressure No or Nominal pressure for eg PN16 what is 16 is it 16 bar or else and is there any equvelent class wrt PN as i know. Flange Class 150 300 400 600 900 1500. PN 20 50 68 100 150 250. then who orignate Flange class/PN.