Long Weld Neck Flange Dimensions - Class 150 to Class 2500
Long Weld Neck Flange Dimensions – Class 150 to Class 2500. Long Weld neck flange dimensions are covered in ASME B16.5 – which covers Pipe Flanges and Flanged Fittings for size NPS ½” to 24” for above NPS 26” to 60” it should be as per ASME B16.47. During the dimensional inspection of a flange, you should check for. Outer & Inner Diameter of body.