Nb chart: Learn the difference and relation between

Learn the difference and relation between NPS, NB and OD of pipes, and how they are measured in inches and millimeters. Also, find out what is NPT and its applications in pipe threading. Nav Bharat Tubes had a variety of pipes and their weight measurements are below. NB pipes weight chart will help you to know about the pipes weight calculation. NB (nominal bore) is also frequently used interchangeably with NPS. Diameter Nominal (DN) This is the international and European metric method used to describe NPS (or NB ).DN pipe sizes numbers are therefore different to NPS. For example, the metric equivalent of an NPS 6 pipe (6”) is DN 150. Nominal Bore ( NB ) is another equivalent designation of NPS. The standard pipe dimension tables shown above are valid for most of the pipe materials including the pipes made up of wrought iron, wrought steel, stainless steel, polyvinyl chloride (PVC) and CPVC.