weld neck flange 5 Inch Class 900 Posted on February 11, 2017July 1, 2017 weld neck flange 5 Inch Class 900 Weld Neck Flange Class 900 Size NPS : 5″ Size DN : 130 mm. Weight : 39.5 kg. StudBolt Size : 1 1/4″ UNC Or (M33) x 190 Long No. of Bolts : 8 EA. Holes Diamater : 34.925 mm. [wpfilebase tag=file id=2115 /] ansi b16 5 ansi flange dimensions ansi flanges asme b16 5 Class 900 flange dimensions raised face flange Weld Neck Flange weld neck flange Class 900