Flanges
Weld Neck or Welding Neck flange dimensions, tolerances and required stud bolts, ASME B16.5. (NPS) Nominal Pipe Size 2 ... Dimensions ASME B16.36 Orifice Flanges RF. Class 300-2500; Dimensions ASME B16.36 Orifice Flanges RTJ. Class 600-2500; Dimensions ASME B16.5 Ring Joint Facings. Class 150-2500; Dimensions [Inches]